Class RobustKnownBiasAndPositionAccelerometerCalibrator
java.lang.Object
com.irurueta.navigation.inertial.calibration.accelerometer.RobustKnownBiasAndPositionAccelerometerCalibrator
- All Implemented Interfaces:
AccelerometerCalibrator,AccelerometerNonLinearCalibrator,KnownBiasAccelerometerCalibrator,OrderedStandardDeviationBodyKinematicsAccelerometerCalibrator,QualityScoredAccelerometerCalibrator
- Direct Known Subclasses:
LMedSRobustKnownBiasAndPositionAccelerometerCalibrator,MSACRobustKnownBiasAndPositionAccelerometerCalibrator,PROMedSRobustKnownBiasAndPositionAccelerometerCalibrator,PROSACRobustKnownBiasAndPositionAccelerometerCalibrator,RANSACRobustKnownBiasAndPositionAccelerometerCalibrator
public abstract class RobustKnownBiasAndPositionAccelerometerCalibrator
extends Object
implements AccelerometerNonLinearCalibrator, KnownBiasAccelerometerCalibrator, OrderedStandardDeviationBodyKinematicsAccelerometerCalibrator, QualityScoredAccelerometerCalibrator
This is an abstract class to robustly estimate accelerometer cross couplings
and scaling factors.
To use this calibrator at least 7 measurements taken at a single known position must be taken at 7 different unknown orientations and zero velocity when common z-axis is assumed, otherwise at least 10 measurements are required.
Measured specific force is assumed to follow the model shown below:
fmeas = ba + (I + Ma) * ftrue + w
Where:
- fmeas is the measured specific force. This is a 3x1 vector.
- ba is accelerometer bias, which is known. This is a 3x1 vector.
- I is the 3x3 identity matrix.
- Ma is the 3x3 matrix containing cross-couplings and scaling factors. Ideally, on
a perfect accelerometer, this should be a 3x3 zero matrix.
- ftrue is ground-truth specific force.
- w is measurement noise.-
Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionprotected static classInternal class containing estimated preliminary result. -
Field Summary
FieldsModifier and TypeFieldDescriptionprivate doubleX-coordinate of known accelerometer bias.private doubleY-coordinate of known accelerometer bias.private doubleZ-coordinate of known accelerometer bias.private booleanThis flag indicates whether z-axis is assumed to be common for accelerometer and gyroscope.protected doubleAmount of confidence expressed as a value between 0.0 and 1.0 (which is equivalent to 100%).static final doubleConstant defining default confidence of the estimated result, which is 99%.static final booleanIndicates that covariance is kept by default after refining result.static final intDefault maximum allowed number of iterations.static final floatDefault amount of progress variation before notifying a change in estimation progress.static final booleanIndicates that result is refined by default.static final com.irurueta.numerical.robust.RobustEstimatorMethodDefault robust estimator method when none is provided.static final booleanIndicates whether by default a common z-axis is assumed for both the accelerometer and gyroscope.private doubleEstimated chi square value.private intEstimated degrees of freedom of chi square value.private com.irurueta.algebra.MatrixEstimated covariance of estimated position.private com.irurueta.algebra.MatrixEstimated accelerometer scale factors and cross coupling errors.private doubleEstimated mean square error respect to provided measurements.private doubleEstimated probability of finding a smaller chi square value expressed as a value between 0.0 and 1.0.private doubleEstimated measure of quality of estimated fit as a value between 0.0 and 1.0.private doubleEstimated reduced chi square value.protected doubleContains gravity norm for current position to be reused during calibration.protected com.irurueta.algebra.MatrixContains 3x3 identify to be reused.private doubleInitial x-y cross coupling error.private doubleInitial x-z cross coupling error.private doubleInitial y-x cross coupling error.private doubleInitial y-z cross coupling error.private doubleInitial z-x cross coupling error.private doubleInitial z-y cross coupling error.private doubleInitial x scaling factor.private doubleInitial y scaling factor.private doubleInitial z scaling factor.protected com.irurueta.numerical.robust.InliersDataData related to inliers found after calibration.private final KnownBiasAndPositionAccelerometerCalibratorInner calibrator to compute calibration for each subset of data or during final refining.private booleanIndicates whether covariance must be kept after refining result.Listener to be notified of events such as when calibration starts, ends or its progress significantly changes.static final doubleMaximum allowed confidence value.static final floatMaximum allowed value for progress delta.protected intMaximum allowed number of iterations.protected List<StandardDeviationBodyKinematics> Contains a list of body kinematics measurements taken at a given position with different unknown orientations and containing the standard deviations of accelerometer and gyroscope measurements.static final doubleMinimum allowed confidence value.static final intMinimum allowed number of iterations.static final floatMinimum allowed value for progress delta.static final intRequired minimum number of measurements when common z-axis is assumed.static final intRequired minimum number of measurements for the general case.private com.irurueta.navigation.frames.ECEFPositionPosition where body kinematics measures have been taken.protected intSize of subsets to be checked during robust estimation.protected floatAmount of progress variation before notifying a progress change during calibration.protected booleanIndicates whether result must be refined using a non linear calibrator over found inliers.protected booleanIndicates whether calibrator is running.protected com.irurueta.algebra.MatrixContains 3x3 temporary matrix.protected com.irurueta.algebra.MatrixContains 3x3 temporary matrix.protected com.irurueta.algebra.MatrixContains 3x1 temporary matrix.protected com.irurueta.algebra.MatrixContains 3x1 temporary matrix. -
Constructor Summary
ConstructorsModifierConstructorDescriptionprotectedConstructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(boolean commonAxisUsed) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(double[] bias) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.algebra.Matrix bias) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Constructor.protectedRobustKnownBiasAndPositionAccelerometerCalibrator(List<StandardDeviationBodyKinematics> measurements) Constructor. -
Method Summary
Modifier and TypeMethodDescriptionprotected voidattemptRefine(RobustKnownBiasAndPositionAccelerometerCalibrator.PreliminaryResult preliminaryResult) Attempts to refine calibration parameters if refinement is requested.protected doublecomputeError(StandardDeviationBodyKinematics measurement, RobustKnownBiasAndPositionAccelerometerCalibrator.PreliminaryResult preliminaryResult) Computes error of preliminary result respect a given measurement for current gravity norm.protected doubleComputes gravity norm for current position.protected voidcomputePreliminarySolutions(int[] samplesIndices, List<RobustKnownBiasAndPositionAccelerometerCalibrator.PreliminaryResult> solutions) Computes a preliminary solution for a subset of samples picked by a robust estimator.private static doubleconvertAcceleration(double value, com.irurueta.units.AccelerationUnit unit) Converts acceleration value and unit to meters per squared second.private static doubleconvertAcceleration(com.irurueta.units.Acceleration acceleration) Converts acceleration instance to meters per squared second.private static com.irurueta.navigation.frames.ECEFPositionconvertPosition(com.irurueta.navigation.frames.NEDPosition position) Converts provided NED position expressed in terms of latitude, longitude and height respect mean Earth surface, to position expressed in ECEF coordinates.create()Creates a robust accelerometer calibrator using default robust method.create(boolean commonAxisUsed) Creates a robust accelerometer calibrator using default robust method.create(boolean commonAxisUsed, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] bias) Creates a robust accelerometer calibrator using default robust method.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibratorcreate(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] qualityScores, com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(double[] bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.algebra.Matrix bias) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.algebra.Matrix bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.ECEFPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibratorcreate(com.irurueta.navigation.frames.NEDPosition position) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, double[] bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.algebra.Matrix bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, boolean commonAxisUsed, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, double[] bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.algebra.Matrix bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener) Creates a robust accelerometer calibrator using default robust method.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.navigation.frames.NEDPosition position, List<StandardDeviationBodyKinematics> measurements, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.Creates a robust accelerometer calibrator using default robust method.create(RobustKnownBiasAndPositionAccelerometerCalibratorListener listener, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.create(List<StandardDeviationBodyKinematics> measurements) Creates a robust accelerometer calibrator using default robust method.create(List<StandardDeviationBodyKinematics> measurements, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.double[]getBias()Gets known bias as an array.voidgetBias(double[] result) Gets known bias as an array.com.irurueta.algebra.MatrixGets known bias as a column matrix.voidgetBiasAsMatrix(com.irurueta.algebra.Matrix result) Gets known bias as a column matrix.Gets known accelerometer bias.voidgetBiasAsTriad(AccelerationTriad result) Gets known accelerometer bias.doublegetBiasX()Gets x-coordinate of known accelerometer bias.com.irurueta.units.AccelerationGets x-coordinate of known accelerometer bias.voidgetBiasXAsAcceleration(com.irurueta.units.Acceleration result) Gets x-coordinate of known accelerometer bias.doublegetBiasY()Gets y-coordinate of known accelerometer bias.com.irurueta.units.AccelerationGets y-coordinate of known accelerometer bias.voidgetBiasYAsAcceleration(com.irurueta.units.Acceleration result) Gets y-coordinate of known accelerometer bias.doublegetBiasZ()Gets z-coordinate of known accelerometer bias.com.irurueta.units.AccelerationGets z-coordinate of known accelerometer bias.voidgetBiasZAsAcceleration(com.irurueta.units.Acceleration result) Gets z-coordinate of known accelerometer bias.doubleReturns amount of confidence expressed as a value between 0.0 and 1.0 (which is equivalent to 100%).com.irurueta.navigation.frames.ECEFPositionGets position where body kinematics measures have been taken expressed in ECEF coordinates.doubleGets estimated chi square value.intGets estimated chi square degrees of freedom.com.irurueta.algebra.MatrixGets estimated covariance matrix for estimated calibration solution.com.irurueta.algebra.MatrixGets estimated accelerometer scale factors and ross coupling errors.doubleGets estimated mean square error respect to provided measurements.Gets estimated x-y cross-coupling error.Gets estimated x-z cross-coupling error.Gets estimated y-x cross-coupling error.Gets estimated y-z cross-coupling error.Gets estimated z-x cross-coupling error.Gets estimated z-y cross-coupling error.doubleGets estimated probability of finding a smaller chi square value expressed as a value between 0.0 and 1.0.doubleGets estimated measure of quality of estimated fit as a value between 0.0 and 1.0.doubleGets estimated reduced chi square value.Gets estimated x-axis scale factor.Gets estimated y-axis scale factor.Gets estimated z-axis scale factor.com.irurueta.algebra.MatrixGets initial scale factors and cross coupling errors matrix.voidgetInitialMa(com.irurueta.algebra.Matrix result) Gets initial scale factors and cross coupling errors matrix.doubleGets initial x-y cross coupling error.doubleGets initial x-z cross coupling error.doubleGets initial y-x cross coupling error.doubleGets initial y-z cross coupling error.doubleGets initial z-x cross coupling error.doubleGets initial z-y cross coupling error.doubleGets initial x scaling factor.doubleGets initial y scaling factor.doubleGets initial z scaling factor.com.irurueta.numerical.robust.InliersDataGets data related to inliers found after estimation.Gets listener to handle events raised by this estimator.intReturns maximum allowed number of iterations.Gets a list of body kinematics measurements taken at a given position with different unknown orientations and containing the standard deviations of accelerometer and gyroscope measurements.Indicates the type of measurement used by this calibrator.abstract com.irurueta.numerical.robust.RobustEstimatorMethodReturns method being used for robust estimation.intGets minimum number of required measurements.com.irurueta.navigation.frames.NEDPositionGets position where body kinematics measures have been taken expressed in NED coordinates.booleangetNedPosition(com.irurueta.navigation.frames.NEDPosition result) Gets position where body kinematics measures have been taken expressed in NED coordinates.intGets size of subsets to be checked during robust estimation.floatReturns amount of progress variation before notifying a progress change during calibration.double[]Returns quality scores corresponding to each measurement.booleanIndicates whether z-axis is assumed to be common for accelerometer and gyroscope.booleanIndicates whether covariance must be kept after refining result.booleanIndicates whether this calibrator requires ordered measurements in a list or not.booleanisReady()Indicates whether calibrator is ready to start.booleanIndicates whether result must be refined using a non-linear solver over found inliers.booleanIndicates whether calibrator is currently running or not.voidsetBias(double[] bias) Sets known bias as an array.voidsetBias(com.irurueta.algebra.Matrix bias) Sets known bias as an array.voidsetBias(AccelerationTriad bias) Sets known accelerometer bias.voidsetBiasCoordinates(double biasX, double biasY, double biasZ) Sets known bias coordinates of accelerometer expressed in meters per squared second (m/s^2).voidsetBiasCoordinates(com.irurueta.units.Acceleration biasX, com.irurueta.units.Acceleration biasY, com.irurueta.units.Acceleration biasZ) Sets known bias coordinates of accelerometer.voidsetBiasX(double biasX) Sets x-coordinate of known accelerometer bias.voidsetBiasX(com.irurueta.units.Acceleration biasX) Sets x-coordinate of known accelerometer bias.voidsetBiasY(double biasY) Sets y-coordinate of known accelerometer bias.voidsetBiasY(com.irurueta.units.Acceleration biasY) Sets y-coordinate of known accelerometer bias.voidsetBiasZ(double biasZ) Sets z-coordinate of known accelerometer bias.voidsetBiasZ(com.irurueta.units.Acceleration biasZ) Sets z-coordinate of known accelerometer bias to be used to find a solution.voidsetCommonAxisUsed(boolean commonAxisUsed) Specifies whether z-axis is assumed to be common for accelerometer and gyroscope.voidsetConfidence(double confidence) Sets amount of confidence expressed as a value between 0.0 and 1.0 (which is equivalent to 100%).voidsetCovarianceKept(boolean keepCovariance) Specifies whether covariance must be kept after refining result.voidsetInitialCrossCouplingErrors(double initialMxy, double initialMxz, double initialMyx, double initialMyz, double initialMzx, double initialMzy) Sets initial cross coupling errors.voidsetInitialMa(com.irurueta.algebra.Matrix initialMa) Sets initial scale factors and cross coupling errors matrix.voidsetInitialMxy(double initialMxy) Sets initial x-y cross coupling error.voidsetInitialMxz(double initialMxz) Sets initial x-z cross coupling error.voidsetInitialMyx(double initialMyx) Sets initial y-x cross coupling error.voidsetInitialMyz(double initialMyz) Sets initial y-z cross coupling error.voidsetInitialMzx(double initialMzx) Sets initial z-x cross coupling error.voidsetInitialMzy(double initialMzy) Sets initial z-y cross coupling error.voidsetInitialScalingFactors(double initialSx, double initialSy, double initialSz) Sets initial scaling factors.voidsetInitialScalingFactorsAndCrossCouplingErrors(double initialSx, double initialSy, double initialSz, double initialMxy, double initialMxz, double initialMyx, double initialMyz, double initialMzx, double initialMzy) Sets initial scaling factors and cross coupling errors.voidsetInitialSx(double initialSx) Sets initial x scaling factor.voidsetInitialSy(double initialSy) Sets initial y scaling factor.voidsetInitialSz(double initialSz) Sets initial z scaling factor.voidSets listener to handle events raised by this estimator.voidsetMaxIterations(int maxIterations) Sets maximum allowed number of iterations.voidsetMeasurements(List<StandardDeviationBodyKinematics> measurements) Sets a list of body kinematics measurements taken at a given position with different unknown orientations and containing the standard deviations of accelerometer and gyroscope measurements.voidsetPosition(com.irurueta.navigation.frames.ECEFPosition position) Gets position where body kinematics measures have been taken expressed in ECEF coordinates.voidsetPosition(com.irurueta.navigation.frames.NEDPosition position) Sets position where body kinematics measures have been taken expressed in NED coordinates.voidsetPreliminarySubsetSize(int preliminarySubsetSize) Sets size of subsets to be checked during robust estimation.voidsetProgressDelta(float progressDelta) Sets amount of progress variation before notifying a progress change during calibration.voidsetQualityScores(double[] qualityScores) Sets quality scores corresponding to each measurement.voidsetResultRefined(boolean refineResult) Specifies whether result must be refined using a non-linear solver over found inliers.Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods inherited from interface com.irurueta.navigation.inertial.calibration.accelerometer.AccelerometerCalibrator
calibrate, isQualityScoresRequired
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Field Details
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DEFAULT_USE_COMMON_Z_AXIS
public static final boolean DEFAULT_USE_COMMON_Z_AXISIndicates whether by default a common z-axis is assumed for both the accelerometer and gyroscope.- See Also:
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MINIMUM_MEASUREMENTS_COMMON_Z_AXIS
public static final int MINIMUM_MEASUREMENTS_COMMON_Z_AXISRequired minimum number of measurements when common z-axis is assumed.- See Also:
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MINIMUM_MEASUREMENTS_GENERAL
public static final int MINIMUM_MEASUREMENTS_GENERALRequired minimum number of measurements for the general case.- See Also:
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DEFAULT_ROBUST_METHOD
public static final com.irurueta.numerical.robust.RobustEstimatorMethod DEFAULT_ROBUST_METHODDefault robust estimator method when none is provided. -
DEFAULT_REFINE_RESULT
public static final boolean DEFAULT_REFINE_RESULTIndicates that result is refined by default.- See Also:
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DEFAULT_KEEP_COVARIANCE
public static final boolean DEFAULT_KEEP_COVARIANCEIndicates that covariance is kept by default after refining result.- See Also:
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DEFAULT_PROGRESS_DELTA
public static final float DEFAULT_PROGRESS_DELTADefault amount of progress variation before notifying a change in estimation progress. By default this is set to 5%.- See Also:
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MIN_PROGRESS_DELTA
public static final float MIN_PROGRESS_DELTAMinimum allowed value for progress delta.- See Also:
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MAX_PROGRESS_DELTA
public static final float MAX_PROGRESS_DELTAMaximum allowed value for progress delta.- See Also:
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DEFAULT_CONFIDENCE
public static final double DEFAULT_CONFIDENCEConstant defining default confidence of the estimated result, which is 99%. This means that with a probability of 99% estimation will be accurate because chosen sub-samples will be inliers.- See Also:
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DEFAULT_MAX_ITERATIONS
public static final int DEFAULT_MAX_ITERATIONSDefault maximum allowed number of iterations.- See Also:
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MIN_CONFIDENCE
public static final double MIN_CONFIDENCEMinimum allowed confidence value.- See Also:
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MAX_CONFIDENCE
public static final double MAX_CONFIDENCEMaximum allowed confidence value.- See Also:
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MIN_ITERATIONS
public static final int MIN_ITERATIONSMinimum allowed number of iterations.- See Also:
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measurements
Contains a list of body kinematics measurements taken at a given position with different unknown orientations and containing the standard deviations of accelerometer and gyroscope measurements. -
listener
Listener to be notified of events such as when calibration starts, ends or its progress significantly changes. -
running
protected boolean runningIndicates whether calibrator is running. -
progressDelta
protected float progressDeltaAmount of progress variation before notifying a progress change during calibration. -
confidence
protected double confidenceAmount of confidence expressed as a value between 0.0 and 1.0 (which is equivalent to 100%). The amount of confidence indicates the probability that the estimated result is correct. Usually this value will be close to 1.0, but not exactly 1.0. -
maxIterations
protected int maxIterationsMaximum allowed number of iterations. When the maximum number of iterations is exceeded, result will not be available, however an approximate result will be available for retrieval. -
inliersData
protected com.irurueta.numerical.robust.InliersData inliersDataData related to inliers found after calibration. -
refineResult
protected boolean refineResultIndicates whether result must be refined using a non linear calibrator over found inliers. If true, inliers will be computed and kept in any implementation regardless of the settings. -
preliminarySubsetSize
protected int preliminarySubsetSizeSize of subsets to be checked during robust estimation. -
commonAxisUsed
private boolean commonAxisUsedThis flag indicates whether z-axis is assumed to be common for accelerometer and gyroscope. When enabled, this eliminates 3 variables from Ma matrix. -
biasX
private double biasXX-coordinate of known accelerometer bias. This is expressed in meters per squared second (m/s^2). -
biasY
private double biasYY-coordinate of known accelerometer bias. This is expressed in meters per squared second (m/s^2). -
biasZ
private double biasZZ-coordinate of known accelerometer bias. This is expressed in meters per squared second (m/s^2). -
initialSx
private double initialSxInitial x scaling factor. -
initialSy
private double initialSyInitial y scaling factor. -
initialSz
private double initialSzInitial z scaling factor. -
initialMxy
private double initialMxyInitial x-y cross coupling error. -
initialMxz
private double initialMxzInitial x-z cross coupling error. -
initialMyx
private double initialMyxInitial y-x cross coupling error. -
initialMyz
private double initialMyzInitial y-z cross coupling error. -
initialMzx
private double initialMzxInitial z-x cross coupling error. -
initialMzy
private double initialMzyInitial z-y cross coupling error. -
position
private com.irurueta.navigation.frames.ECEFPosition positionPosition where body kinematics measures have been taken. -
estimatedMa
private com.irurueta.algebra.Matrix estimatedMaEstimated accelerometer scale factors and cross coupling errors. This is the product of matrix Ta containing cross coupling errors and Ka containing scaling factors. So tat:Ma = [sx mxy mxz] = Ta*Ka [myx sy myz] [mzx mzy sz ]Where:Ka = [sx 0 0 ] [0 sy 0 ] [0 0 sz]andTa = [1 -alphaXy alphaXz ] [alphaYx 1 -alphaYz] [-alphaZx alphaZy 1 ]Hence:Ma = [sx mxy mxz] = Ta*Ka = [sx -sy * alphaXy sz * alphaXz ] [myx sy myz] [sx * alphaYx sy -sz * alphaYz] [mzx mzy sz ] [-sx * alphaZx sy * alphaZy sz ]This instance allows any 3x3 matrix however, typically alphaYx, alphaZx and alphaZy are considered to be zero if the accelerometer z-axis is assumed to be the same as the body z-axis. When this is assumed, myx = mzx = mzy = 0 and the Ma matrix becomes upper diagonal:Ma = [sx mxy mxz] [0 sy myz] [0 0 sz ]Values of this matrix are unit-less. -
keepCovariance
private boolean keepCovarianceIndicates whether covariance must be kept after refining result. This setting is only taken into account if result is refined. -
estimatedCovariance
private com.irurueta.algebra.Matrix estimatedCovarianceEstimated covariance of estimated position. This is only available when result has been refined and covariance is kept. -
estimatedChiSq
private double estimatedChiSqEstimated chi square value. -
estimatedChiSqDegreesOfFreedom
private int estimatedChiSqDegreesOfFreedomEstimated degrees of freedom of chi square value. Degrees of freedom is equal to the number of sampled data minus the number of estimated parameters. -
estimatedReducedChiSq
private double estimatedReducedChiSqEstimated reduced chi square value. This is equal to estimated chi square value divided by its degrees of freedom. Ideally this value should be close to 1.0. -
estimatedMse
private double estimatedMseEstimated mean square error respect to provided measurements. -
estimatedP
private double estimatedPEstimated probability of finding a smaller chi square value expressed as a value between 0.0 and 1.0. The smaller the found chi square value is, the better the fit of the estimated parameters to the actual parameter. Thus, the smaller the chance of finding a smaller chi square value, then the better the estimated fit is. -
estimatedQ
private double estimatedQEstimated measure of quality of estimated fit as a value between 0.0 and 1.0. The larger the quality value is, the better the fit that has been estimated. -
innerCalibrator
Inner calibrator to compute calibration for each subset of data or during final refining. -
gravityNorm
protected double gravityNormContains gravity norm for current position to be reused during calibration. -
identity
protected com.irurueta.algebra.Matrix identityContains 3x3 identify to be reused. -
tmp1
protected com.irurueta.algebra.Matrix tmp1Contains 3x3 temporary matrix. -
tmp2
protected com.irurueta.algebra.Matrix tmp2Contains 3x3 temporary matrix. -
tmp3
protected com.irurueta.algebra.Matrix tmp3Contains 3x1 temporary matrix. -
tmp4
protected com.irurueta.algebra.Matrix tmp4Contains 3x1 temporary matrix.
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Constructor Details
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RobustKnownBiasAndPositionAccelerometerCalibrator
protected RobustKnownBiasAndPositionAccelerometerCalibrator()Constructor. -
RobustKnownBiasAndPositionAccelerometerCalibrator
protected RobustKnownBiasAndPositionAccelerometerCalibrator(List<StandardDeviationBodyKinematics> measurements) Constructor.- Parameters:
measurements- collection of body kinematics measurements with standard deviations taken at the same position with zero velocity and unknown different orientations.
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RobustKnownBiasAndPositionAccelerometerCalibrator
protected RobustKnownBiasAndPositionAccelerometerCalibrator(boolean commonAxisUsed) Constructor.- Parameters:
commonAxisUsed- indicates whether z-axis is assumed to be common for accelerometer and gyroscope.
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RobustKnownBiasAndPositionAccelerometerCalibrator
protected RobustKnownBiasAndPositionAccelerometerCalibrator(double[] bias) Constructor.- Parameters:
bias- known accelerometer bias. This must have length 3 and is expressed in meters per squared second (m/s^2).- Throws:
IllegalArgumentException- if provided bias array does not have length 3.
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RobustKnownBiasAndPositionAccelerometerCalibrator
protected RobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.algebra.Matrix bias) Constructor.- Parameters:
bias- known accelerometer bias.- Throws:
IllegalArgumentException- if provided bias matrix is not 3x1.
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RobustKnownBiasAndPositionAccelerometerCalibrator
protected RobustKnownBiasAndPositionAccelerometerCalibrator(com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa) Constructor.- Parameters:
bias- known accelerometer bias.initialMa- initial scale factors and cross coupling errors matrix.- Throws:
IllegalArgumentException- if either provided bias matrix is not 3x1 or scaling and coupling error matrix is not 3x3.
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Method Details
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getBiasX
public double getBiasX()Gets x-coordinate of known accelerometer bias. This is expressed in meters per squared second (m/s^2).- Specified by:
getBiasXin interfaceKnownBiasAccelerometerCalibrator- Returns:
- x-coordinate of known accelerometer bias.
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setBiasX
public void setBiasX(double biasX) throws com.irurueta.navigation.LockedException Sets x-coordinate of known accelerometer bias. This is expressed in meters per squared second (m/s^2).- Specified by:
setBiasXin interfaceKnownBiasAccelerometerCalibrator- Parameters:
biasX- x-coordinate of known accelerometer bias.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getBiasY
public double getBiasY()Gets y-coordinate of known accelerometer bias. This is expressed in meters per squared second (m/s^2).- Specified by:
getBiasYin interfaceKnownBiasAccelerometerCalibrator- Returns:
- y-coordinate of known accelerometer bias.
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setBiasY
public void setBiasY(double biasY) throws com.irurueta.navigation.LockedException Sets y-coordinate of known accelerometer bias. This is expressed in meters per squared second (m/s^2).- Specified by:
setBiasYin interfaceKnownBiasAccelerometerCalibrator- Parameters:
biasY- y-coordinate of known accelerometer bias.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getBiasZ
public double getBiasZ()Gets z-coordinate of known accelerometer bias. This is expressed in meters per squared second (m/s^2).- Specified by:
getBiasZin interfaceKnownBiasAccelerometerCalibrator- Returns:
- z-coordinate of known accelerometer bias.
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setBiasZ
public void setBiasZ(double biasZ) throws com.irurueta.navigation.LockedException Sets z-coordinate of known accelerometer bias. This is expressed in meters per squared second (m/s^2).- Specified by:
setBiasZin interfaceKnownBiasAccelerometerCalibrator- Parameters:
biasZ- z-coordinate of known accelerometer bias.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getBiasXAsAcceleration
public com.irurueta.units.Acceleration getBiasXAsAcceleration()Gets x-coordinate of known accelerometer bias.- Specified by:
getBiasXAsAccelerationin interfaceKnownBiasAccelerometerCalibrator- Returns:
- x-coordinate of known accelerometer bias.
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getBiasXAsAcceleration
public void getBiasXAsAcceleration(com.irurueta.units.Acceleration result) Gets x-coordinate of known accelerometer bias.- Specified by:
getBiasXAsAccelerationin interfaceKnownBiasAccelerometerCalibrator- Parameters:
result- instance where result data will be stored.
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setBiasX
public void setBiasX(com.irurueta.units.Acceleration biasX) throws com.irurueta.navigation.LockedException Sets x-coordinate of known accelerometer bias.- Specified by:
setBiasXin interfaceKnownBiasAccelerometerCalibrator- Parameters:
biasX- x-coordinate of known accelerometer bias.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getBiasYAsAcceleration
public com.irurueta.units.Acceleration getBiasYAsAcceleration()Gets y-coordinate of known accelerometer bias.- Specified by:
getBiasYAsAccelerationin interfaceKnownBiasAccelerometerCalibrator- Returns:
- y-coordinate of known accelerometer bias.
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getBiasYAsAcceleration
public void getBiasYAsAcceleration(com.irurueta.units.Acceleration result) Gets y-coordinate of known accelerometer bias.- Specified by:
getBiasYAsAccelerationin interfaceKnownBiasAccelerometerCalibrator- Parameters:
result- instance where result data will be stored.
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setBiasY
public void setBiasY(com.irurueta.units.Acceleration biasY) throws com.irurueta.navigation.LockedException Sets y-coordinate of known accelerometer bias.- Specified by:
setBiasYin interfaceKnownBiasAccelerometerCalibrator- Parameters:
biasY- y-coordinate of known accelerometer bias.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getBiasZAsAcceleration
public com.irurueta.units.Acceleration getBiasZAsAcceleration()Gets z-coordinate of known accelerometer bias.- Specified by:
getBiasZAsAccelerationin interfaceKnownBiasAccelerometerCalibrator- Returns:
- z-coordinate of known accelerometer bias.
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getBiasZAsAcceleration
public void getBiasZAsAcceleration(com.irurueta.units.Acceleration result) Gets z-coordinate of known accelerometer bias.- Specified by:
getBiasZAsAccelerationin interfaceKnownBiasAccelerometerCalibrator- Parameters:
result- instance where result data will be stored.
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setBiasZ
public void setBiasZ(com.irurueta.units.Acceleration biasZ) throws com.irurueta.navigation.LockedException Sets z-coordinate of known accelerometer bias to be used to find a solution.- Specified by:
setBiasZin interfaceKnownBiasAccelerometerCalibrator- Parameters:
biasZ- z-coordinate of known accelerometer bias.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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setBiasCoordinates
public void setBiasCoordinates(double biasX, double biasY, double biasZ) throws com.irurueta.navigation.LockedException Sets known bias coordinates of accelerometer expressed in meters per squared second (m/s^2).- Specified by:
setBiasCoordinatesin interfaceKnownBiasAccelerometerCalibrator- Parameters:
biasX- x-coordinate of known accelerometer bias.biasY- y-coordinate of known accelerometer bias.biasZ- z-coordinate of known accelerometer bias.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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setBiasCoordinates
public void setBiasCoordinates(com.irurueta.units.Acceleration biasX, com.irurueta.units.Acceleration biasY, com.irurueta.units.Acceleration biasZ) throws com.irurueta.navigation.LockedException Sets known bias coordinates of accelerometer.- Specified by:
setBiasCoordinatesin interfaceKnownBiasAccelerometerCalibrator- Parameters:
biasX- x-coordinate of known accelerometer bias.biasY- y-coordinate of known accelerometer bias.biasZ- z-coordinate of known accelerometer bias.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getBiasAsTriad
Gets known accelerometer bias.- Specified by:
getBiasAsTriadin interfaceKnownBiasAccelerometerCalibrator- Returns:
- known accelerometer bias.
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getInitialSx
public double getInitialSx()Gets initial x scaling factor.- Specified by:
getInitialSxin interfaceAccelerometerNonLinearCalibrator- Returns:
- initial x scaling factor.
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setInitialSx
public void setInitialSx(double initialSx) throws com.irurueta.navigation.LockedException Sets initial x scaling factor.- Specified by:
setInitialSxin interfaceAccelerometerNonLinearCalibrator- Parameters:
initialSx- initial x scaling factor.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getInitialSy
public double getInitialSy()Gets initial y scaling factor. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
getInitialSyin interfaceAccelerometerNonLinearCalibrator- Returns:
- initial y scaling factor.
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setInitialSy
public void setInitialSy(double initialSy) throws com.irurueta.navigation.LockedException Sets initial y scaling factor. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
setInitialSyin interfaceAccelerometerNonLinearCalibrator- Parameters:
initialSy- initial y scaling factor.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getInitialSz
public double getInitialSz()Gets initial z scaling factor. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
getInitialSzin interfaceAccelerometerNonLinearCalibrator- Returns:
- initial z scaling factor.
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setInitialSz
public void setInitialSz(double initialSz) throws com.irurueta.navigation.LockedException Sets initial z scaling factor. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
setInitialSzin interfaceAccelerometerNonLinearCalibrator- Parameters:
initialSz- initial z scaling factor.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getInitialMxy
public double getInitialMxy()Gets initial x-y cross coupling error. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
getInitialMxyin interfaceAccelerometerNonLinearCalibrator- Returns:
- initial x-y cross coupling error.
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setInitialMxy
public void setInitialMxy(double initialMxy) throws com.irurueta.navigation.LockedException Sets initial x-y cross coupling error. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
setInitialMxyin interfaceAccelerometerNonLinearCalibrator- Parameters:
initialMxy- initial x-y cross coupling error.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getInitialMxz
public double getInitialMxz()Gets initial x-z cross coupling error. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
getInitialMxzin interfaceAccelerometerNonLinearCalibrator- Returns:
- initial x-z cross coupling error.
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setInitialMxz
public void setInitialMxz(double initialMxz) throws com.irurueta.navigation.LockedException Sets initial x-z cross coupling error. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
setInitialMxzin interfaceAccelerometerNonLinearCalibrator- Parameters:
initialMxz- initial x-z cross coupling error.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getInitialMyx
public double getInitialMyx()Gets initial y-x cross coupling error. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
getInitialMyxin interfaceAccelerometerNonLinearCalibrator- Returns:
- initial y-x cross coupling error.
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setInitialMyx
public void setInitialMyx(double initialMyx) throws com.irurueta.navigation.LockedException Sets initial y-x cross coupling error. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
setInitialMyxin interfaceAccelerometerNonLinearCalibrator- Parameters:
initialMyx- initial y-x cross coupling error.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getInitialMyz
public double getInitialMyz()Gets initial y-z cross coupling error. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
getInitialMyzin interfaceAccelerometerNonLinearCalibrator- Returns:
- initial y-z cross coupling error.
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setInitialMyz
public void setInitialMyz(double initialMyz) throws com.irurueta.navigation.LockedException Sets initial y-z cross coupling error. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
setInitialMyzin interfaceAccelerometerNonLinearCalibrator- Parameters:
initialMyz- initial y-z cross coupling error.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getInitialMzx
public double getInitialMzx()Gets initial z-x cross coupling error. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
getInitialMzxin interfaceAccelerometerNonLinearCalibrator- Returns:
- initial z-x cross coupling error.
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setInitialMzx
public void setInitialMzx(double initialMzx) throws com.irurueta.navigation.LockedException Sets initial z-x cross coupling error. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
setInitialMzxin interfaceAccelerometerNonLinearCalibrator- Parameters:
initialMzx- initial z-x cross coupling error.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getInitialMzy
public double getInitialMzy()Gets initial z-y cross coupling error. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
getInitialMzyin interfaceAccelerometerNonLinearCalibrator- Returns:
- initial z-y cross coupling error.
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setInitialMzy
public void setInitialMzy(double initialMzy) throws com.irurueta.navigation.LockedException Sets initial z-y cross coupling error. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
setInitialMzyin interfaceAccelerometerNonLinearCalibrator- Parameters:
initialMzy- initial z-y cross coupling error.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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setInitialScalingFactors
public void setInitialScalingFactors(double initialSx, double initialSy, double initialSz) throws com.irurueta.navigation.LockedException Sets initial scaling factors. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
setInitialScalingFactorsin interfaceAccelerometerNonLinearCalibrator- Parameters:
initialSx- initial x scaling factor.initialSy- initial y scaling factor.initialSz- initial z scaling factor.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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setInitialCrossCouplingErrors
public void setInitialCrossCouplingErrors(double initialMxy, double initialMxz, double initialMyx, double initialMyz, double initialMzx, double initialMzy) throws com.irurueta.navigation.LockedException Sets initial cross coupling errors. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
setInitialCrossCouplingErrorsin interfaceAccelerometerNonLinearCalibrator- Parameters:
initialMxy- initial x-y cross coupling error.initialMxz- initial x-z cross coupling error.initialMyx- initial y-x cross coupling error.initialMyz- initial y-z cross coupling error.initialMzx- initial z-x cross coupling error.initialMzy- initial z-y cross coupling error.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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setInitialScalingFactorsAndCrossCouplingErrors
public void setInitialScalingFactorsAndCrossCouplingErrors(double initialSx, double initialSy, double initialSz, double initialMxy, double initialMxz, double initialMyx, double initialMyz, double initialMzx, double initialMzy) throws com.irurueta.navigation.LockedException Sets initial scaling factors and cross coupling errors. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
setInitialScalingFactorsAndCrossCouplingErrorsin interfaceAccelerometerNonLinearCalibrator- Parameters:
initialSx- initial x scaling factor.initialSy- initial y scaling factor.initialSz- initial z scaling factor.initialMxy- initial x-y cross coupling error.initialMxz- initial x-z cross coupling error.initialMyx- initial y-x cross coupling error.initialMyz- initial y-z cross coupling error.initialMzx- initial z-x cross coupling error.initialMzy- initial z-y cross coupling error.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getBias
public double[] getBias()Gets known bias as an array. Array values are expressed in meters per squared second (m/s^2).- Specified by:
getBiasin interfaceKnownBiasAccelerometerCalibrator- Returns:
- array containing coordinates of known bias.
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getBias
public void getBias(double[] result) Gets known bias as an array. Array values are expressed in meters per squared second (m/s^2).- Specified by:
getBiasin interfaceKnownBiasAccelerometerCalibrator- Parameters:
result- instance where result data will be copied to.- Throws:
IllegalArgumentException- if provided array does not have length 3.
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setBias
public void setBias(double[] bias) throws com.irurueta.navigation.LockedException Sets known bias as an array. Array values are expressed in meters per squared second (m/s^2).- Specified by:
setBiasin interfaceKnownBiasAccelerometerCalibrator- Parameters:
bias- known bias to be set- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.IllegalArgumentException- if provided array does not have length 3.
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getBiasAsMatrix
public com.irurueta.algebra.Matrix getBiasAsMatrix()Gets known bias as a column matrix.- Specified by:
getBiasAsMatrixin interfaceKnownBiasAccelerometerCalibrator- Returns:
- known bias as a column matrix.
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getBiasAsMatrix
public void getBiasAsMatrix(com.irurueta.algebra.Matrix result) Gets known bias as a column matrix.- Specified by:
getBiasAsMatrixin interfaceKnownBiasAccelerometerCalibrator- Parameters:
result- instance where result data will be copied to.- Throws:
IllegalArgumentException- if provided matrix is not 3x1.
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setBias
public void setBias(com.irurueta.algebra.Matrix bias) throws com.irurueta.navigation.LockedException Sets known bias as an array.- Specified by:
setBiasin interfaceKnownBiasAccelerometerCalibrator- Parameters:
bias- bias to be set.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.IllegalArgumentException- if provided matrix is not 3x1.
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getInitialMa
public com.irurueta.algebra.Matrix getInitialMa()Gets initial scale factors and cross coupling errors matrix. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
getInitialMain interfaceAccelerometerNonLinearCalibrator- Returns:
- initial scale factors and cross coupling errors matrix.
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getInitialMa
public void getInitialMa(com.irurueta.algebra.Matrix result) Gets initial scale factors and cross coupling errors matrix. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
getInitialMain interfaceAccelerometerNonLinearCalibrator- Parameters:
result- instance where data will be stored.- Throws:
IllegalArgumentException- if provided matrix is not 3x3.
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setInitialMa
public void setInitialMa(com.irurueta.algebra.Matrix initialMa) throws com.irurueta.navigation.LockedException Sets initial scale factors and cross coupling errors matrix. This is only taken into account if non-linear preliminary solutions are used.- Specified by:
setInitialMain interfaceAccelerometerNonLinearCalibrator- Parameters:
initialMa- initial scale factors and cross coupling errors matrix.- Throws:
IllegalArgumentException- if provided matrix is not 3x3.com.irurueta.navigation.LockedException- if calibrator is currently running.
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getEcefPosition
public com.irurueta.navigation.frames.ECEFPosition getEcefPosition()Gets position where body kinematics measures have been taken expressed in ECEF coordinates.- Returns:
- position where body kinematics measures have been taken.
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getNedPosition
public com.irurueta.navigation.frames.NEDPosition getNedPosition()Gets position where body kinematics measures have been taken expressed in NED coordinates.- Returns:
- position where body kinematics measures have been taken or null if not available.
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getMeasurements
Gets a list of body kinematics measurements taken at a given position with different unknown orientations and containing the standard deviations of accelerometer and gyroscope measurements.- Specified by:
getMeasurementsin interfaceOrderedStandardDeviationBodyKinematicsAccelerometerCalibrator- Returns:
- list of body kinematics measurements.
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setMeasurements
public void setMeasurements(List<StandardDeviationBodyKinematics> measurements) throws com.irurueta.navigation.LockedException Sets a list of body kinematics measurements taken at a given position with different unknown orientations and containing the standard deviations of accelerometer and gyroscope measurements.- Specified by:
setMeasurementsin interfaceOrderedStandardDeviationBodyKinematicsAccelerometerCalibrator- Parameters:
measurements- list of body kinematics measurements.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getMeasurementType
Indicates the type of measurement used by this calibrator.- Specified by:
getMeasurementTypein interfaceAccelerometerCalibrator- Returns:
- type of measurement used by this calibrator.
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isOrderedMeasurementsRequired
public boolean isOrderedMeasurementsRequired()Indicates whether this calibrator requires ordered measurements in a list or not.- Specified by:
isOrderedMeasurementsRequiredin interfaceAccelerometerCalibrator- Returns:
- true if measurements must be ordered, false otherwise.
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isCommonAxisUsed
public boolean isCommonAxisUsed()Indicates whether z-axis is assumed to be common for accelerometer and gyroscope. When enabled, this eliminates 3 variables from Ma matrix.- Specified by:
isCommonAxisUsedin interfaceAccelerometerCalibrator- Returns:
- true if z-axis is assumed to be common for accelerometer and gyroscope, false otherwise.
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setCommonAxisUsed
public void setCommonAxisUsed(boolean commonAxisUsed) throws com.irurueta.navigation.LockedException Specifies whether z-axis is assumed to be common for accelerometer and gyroscope. When enabled, this eliminates 3 variables from Ma matrix.- Specified by:
setCommonAxisUsedin interfaceAccelerometerCalibrator- Parameters:
commonAxisUsed- true if z-axis is assumed to be common for accelerometer and gyroscope, false otherwise.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getListener
Gets listener to handle events raised by this estimator.- Returns:
- listener to handle events raised by this estimator.
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getMinimumRequiredMeasurements
public int getMinimumRequiredMeasurements()Gets minimum number of required measurements.- Specified by:
getMinimumRequiredMeasurementsin interfaceAccelerometerCalibrator- Returns:
- minimum number of required measurements.
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isReady
public boolean isReady()Indicates whether calibrator is ready to start.- Specified by:
isReadyin interfaceAccelerometerCalibrator- Returns:
- true if calibrator is ready, false otherwise.
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isRunning
public boolean isRunning()Indicates whether calibrator is currently running or not.- Specified by:
isRunningin interfaceAccelerometerCalibrator- Returns:
- true if calibrator is running, false otherwise.
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getProgressDelta
public float getProgressDelta()Returns amount of progress variation before notifying a progress change during calibration.- Returns:
- amount of progress variation before notifying a progress change during calibration.
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setProgressDelta
public void setProgressDelta(float progressDelta) throws com.irurueta.navigation.LockedException Sets amount of progress variation before notifying a progress change during calibration.- Parameters:
progressDelta- amount of progress variation before notifying a progress change during calibration.- Throws:
IllegalArgumentException- if progress delta is less than zero or greater than 1.com.irurueta.navigation.LockedException- if calibrator is currently running.
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getConfidence
public double getConfidence()Returns amount of confidence expressed as a value between 0.0 and 1.0 (which is equivalent to 100%). The amount of confidence indicates the probability that the estimated result is correct. Usually this value will be close to 1.0, but not exactly 1.0.- Returns:
- amount of confidence as a value between 0.0 and 1.0.
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setConfidence
public void setConfidence(double confidence) throws com.irurueta.navigation.LockedException Sets amount of confidence expressed as a value between 0.0 and 1.0 (which is equivalent to 100%). The amount of confidence indicates the probability that the estimated result is correct. Usually this value will be close to 1.0, but not exactly 1.0.- Parameters:
confidence- confidence to be set as a value between 0.0 and 1.0.- Throws:
IllegalArgumentException- if provided value is not between 0.0 and 1.0.com.irurueta.navigation.LockedException- if calibrator is currently running.
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getMaxIterations
public int getMaxIterations()Returns maximum allowed number of iterations. If maximum allowed number of iterations is achieved without converging to a result when calling calibrate(), a RobustEstimatorException will be raised.- Returns:
- maximum allowed number of iterations.
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setMaxIterations
public void setMaxIterations(int maxIterations) throws com.irurueta.navigation.LockedException Sets maximum allowed number of iterations. When the maximum number of iterations is exceeded, result will not be available, however an approximate result will be available for retrieval.- Parameters:
maxIterations- maximum allowed number of iterations to be set.- Throws:
IllegalArgumentException- if provided value is less than 1.com.irurueta.navigation.LockedException- if calibrator is currently running.
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getInliersData
public com.irurueta.numerical.robust.InliersData getInliersData()Gets data related to inliers found after estimation.- Returns:
- data related to inliers found after estimation.
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isResultRefined
public boolean isResultRefined()Indicates whether result must be refined using a non-linear solver over found inliers.- Returns:
- true to refine result, false to simply use result found by robust estimator without further refining.
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setResultRefined
public void setResultRefined(boolean refineResult) throws com.irurueta.navigation.LockedException Specifies whether result must be refined using a non-linear solver over found inliers.- Parameters:
refineResult- true to refine result, false to simply use result found by robust estimator without further refining.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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isCovarianceKept
public boolean isCovarianceKept()Indicates whether covariance must be kept after refining result. This setting is only taken into account if result is refined.- Returns:
- true if covariance must be kept after refining result, false otherwise.
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setCovarianceKept
public void setCovarianceKept(boolean keepCovariance) throws com.irurueta.navigation.LockedException Specifies whether covariance must be kept after refining result. This setting is only taken into account if result is refined.- Parameters:
keepCovariance- true if covariance must be kept after refining result, false otherwise.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.
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getQualityScores
public double[] getQualityScores()Returns quality scores corresponding to each measurement. The larger the score value the better the quality of the sample. This implementation always returns null. Subclasses using quality scores must implement proper behavior.- Specified by:
getQualityScoresin interfaceQualityScoredAccelerometerCalibrator- Returns:
- quality scores corresponding to each sample.
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setQualityScores
public void setQualityScores(double[] qualityScores) throws com.irurueta.navigation.LockedException Sets quality scores corresponding to each measurement. The larger the score value the better the quality of the sample. This implementation makes no action. Subclasses using quality scores must implement proper behaviour.- Specified by:
setQualityScoresin interfaceQualityScoredAccelerometerCalibrator- Parameters:
qualityScores- quality scores corresponding to each pair of matched points.- Throws:
IllegalArgumentException- if provided quality scores length is smaller than minimum required samples.com.irurueta.navigation.LockedException- if calibrator is currently running.
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getEstimatedMa
public com.irurueta.algebra.Matrix getEstimatedMa()Gets estimated accelerometer scale factors and ross coupling errors. This is the product of matrix Ta containing cross coupling errors and Ka containing scaling factors. So tat:Ma = [sx mxy mxz] = Ta*Ka [myx sy myz] [mzx mzy sz ]Where:Ka = [sx 0 0 ] [0 sy 0 ] [0 0 sz]andTa = [1 -alphaXy alphaXz ] [alphaYx 1 -alphaYz] [-alphaZx alphaZy 1 ]Hence:Ma = [sx mxy mxz] = Ta*Ka = [sx -sy * alphaXy sz * alphaXz ] [myx sy myz] [sx * alphaYx sy -sz * alphaYz] [mzx mzy sz ] [-sx * alphaZx sy * alphaZy sz ]This instance allows any 3x3 matrix however, typically alphaYx, alphaZx and alphaZy are considered to be zero if the accelerometer z-axis is assumed to be the same as the body z-axis. When this is assumed, myx = mzx = mzy = 0 and the Ma matrix becomes upper diagonal:Ma = [sx mxy mxz] [0 sy myz] [0 0 sz ]Values of this matrix are unit-less.- Specified by:
getEstimatedMain interfaceAccelerometerCalibrator- Returns:
- estimated accelerometer scale factors and cross coupling errors, or null if not available.
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getEstimatedSx
Gets estimated x-axis scale factor.- Specified by:
getEstimatedSxin interfaceAccelerometerCalibrator- Returns:
- estimated x-axis scale factor or null if not available.
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getEstimatedSy
Gets estimated y-axis scale factor.- Specified by:
getEstimatedSyin interfaceAccelerometerCalibrator- Returns:
- estimated y-axis scale factor or null if not available.
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getEstimatedSz
Gets estimated z-axis scale factor.- Specified by:
getEstimatedSzin interfaceAccelerometerCalibrator- Returns:
- estimated z-axis scale factor or null if not available.
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getEstimatedMxy
Gets estimated x-y cross-coupling error.- Specified by:
getEstimatedMxyin interfaceAccelerometerCalibrator- Returns:
- estimated x-y cross-coupling error or null if not available.
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getEstimatedMxz
Gets estimated x-z cross-coupling error.- Specified by:
getEstimatedMxzin interfaceAccelerometerCalibrator- Returns:
- estimated x-z cross-coupling error or null if not available.
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getEstimatedMyx
Gets estimated y-x cross-coupling error.- Specified by:
getEstimatedMyxin interfaceAccelerometerCalibrator- Returns:
- estimated y-x cross-coupling error or null if not available.
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getEstimatedMyz
Gets estimated y-z cross-coupling error.- Specified by:
getEstimatedMyzin interfaceAccelerometerCalibrator- Returns:
- estimated y-z cross-coupling error or null if not available.
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getEstimatedMzx
Gets estimated z-x cross-coupling error.- Specified by:
getEstimatedMzxin interfaceAccelerometerCalibrator- Returns:
- estimated z-x cross-coupling error or null if not available.
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getEstimatedMzy
Gets estimated z-y cross-coupling error.- Specified by:
getEstimatedMzyin interfaceAccelerometerCalibrator- Returns:
- estimated z-y cross-coupling error or null if not available.
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getEstimatedCovariance
public com.irurueta.algebra.Matrix getEstimatedCovariance()Gets estimated covariance matrix for estimated calibration solution. Diagonal elements of the matrix contains variance for the following parameters (following indicated order): sx, sy, sz, mxy, mxz, myx, myz, mzx, mzy. This is only available when result has been refined and covariance is kept.- Specified by:
getEstimatedCovariancein interfaceAccelerometerNonLinearCalibrator- Returns:
- estimated covariance matrix for estimated position.
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getEstimatedChiSq
public double getEstimatedChiSq()Gets estimated chi square value.- Specified by:
getEstimatedChiSqin interfaceAccelerometerNonLinearCalibrator- Returns:
- estimated chi square value.
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getEstimatedChiSqDegreesOfFreedom
public int getEstimatedChiSqDegreesOfFreedom()Gets estimated chi square degrees of freedom. Degrees of freedom is equal to the number of sampled data minus the number of estimated parameters.- Specified by:
getEstimatedChiSqDegreesOfFreedomin interfaceAccelerometerNonLinearCalibrator- Returns:
- estimated degrees of freedom of chi square value
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getEstimatedReducedChiSq
public double getEstimatedReducedChiSq()Gets estimated reduced chi square value. This is equal to estimated chi square value divided by its degrees of freedom. Ideally this value should be close to 1.0, indicating that fit is optimal. A value larger than 1.0 indicates that fit is not good or noise has been underestimated, and a value smaller than 1.0 indicates that there is overfitting or noise has been overestimated.- Specified by:
getEstimatedReducedChiSqin interfaceAccelerometerNonLinearCalibrator- Returns:
- estimated reduced chi square value
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getEstimatedMse
public double getEstimatedMse()Gets estimated mean square error respect to provided measurements.- Specified by:
getEstimatedMsein interfaceAccelerometerNonLinearCalibrator- Returns:
- estimated mean square error respect to provided measurements.
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getEstimatedP
public double getEstimatedP()Gets estimated probability of finding a smaller chi square value expressed as a value between 0.0 and 1.0. The smaller the found chi square value is, the better the fit of the estimated parameters to the actual parameter. Thus, the smaller the chance of finding a smaller chi square value, then the better the estimated fit is.- Specified by:
getEstimatedPin interfaceAccelerometerNonLinearCalibrator- Returns:
- estimated probability of finding a smaller chi square value.
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getEstimatedQ
public double getEstimatedQ()Gets estimated measure of quality of estimated fit as a value between 0.0 and 1.0. The larger the quality value is, the better the fit that has been estimated.- Specified by:
getEstimatedQin interfaceAccelerometerNonLinearCalibrator- Returns:
- estimated measure of quality of estimated fit.
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getPreliminarySubsetSize
public int getPreliminarySubsetSize()Gets size of subsets to be checked during robust estimation. This has to be at leastgetMinimumRequiredMeasurements().- Returns:
- size of subsets to be checked during robust estimation.
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setPreliminarySubsetSize
public void setPreliminarySubsetSize(int preliminarySubsetSize) throws com.irurueta.navigation.LockedException Sets size of subsets to be checked during robust estimation. This has to be at leastgetMinimumRequiredMeasurements().- Parameters:
preliminarySubsetSize- size of subsets to be checked during robust estimation.- Throws:
com.irurueta.navigation.LockedException- if calibrator is currently running.IllegalArgumentException- if provided value is less thangetMinimumRequiredMeasurements().
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getMethod
public abstract com.irurueta.numerical.robust.RobustEstimatorMethod getMethod()Returns method being used for robust estimation.- Returns:
- method being used for robust estimation.
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create
public static RobustKnownBiasAndPositionAccelerometerCalibrator create(com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.- Parameters:
method- robust estimator method.- Returns:
- a robust accelerometer calibrator.
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create
public static RobustKnownBiasAndPositionAccelerometerCalibrator create(List<StandardDeviationBodyKinematics> measurements, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.- Parameters:
measurements- list of body kinematics measurements taken at a given position with different unknown orientations and containing the standard deviations of accelerometer and gyroscope measurements.method- robust estimator method.- Returns:
- a robust accelerometer calibrator.
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create
public static RobustKnownBiasAndPositionAccelerometerCalibrator create(boolean commonAxisUsed, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.- Parameters:
commonAxisUsed- indicates whether z-axis is assumed to be common for accelerometer and gyroscope.method- robust estimator method.- Returns:
- a robust accelerometer calibrator.
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create
public static RobustKnownBiasAndPositionAccelerometerCalibrator create(double[] bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.- Parameters:
bias- known accelerometer bias. This must have length 3 and is expressed in meters per squared second (m/s^2).method- robust estimator method.- Returns:
- a robust accelerometer calibrator.
- Throws:
IllegalArgumentException- if provided bias array does not have length 3.
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create
public static RobustKnownBiasAndPositionAccelerometerCalibrator create(com.irurueta.algebra.Matrix bias, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.- Parameters:
bias- known accelerometer bias.method- robust estimator method.- Returns:
- a robust accelerometer calibrator.
- Throws:
IllegalArgumentException- if provided bias matrix is not 3x1.
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create
public static RobustKnownBiasAndPositionAccelerometerCalibrator create(com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa, com.irurueta.numerical.robust.RobustEstimatorMethod method) Creates a robust accelerometer calibrator.- Parameters:
bias- known accelerometer bias.initialMa- initial scale factors and cross coupling errors matrix.method- robust estimator method.- Returns:
- a robust accelerometer calibrator.
- Throws:
IllegalArgumentException- if either provided bias matrix is not 3x1 or scaling and coupling error matrix is not 3x3.
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create
Creates a robust accelerometer calibrator using default robust method.- Returns:
- a robust accelerometer calibrator.
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create
public static RobustKnownBiasAndPositionAccelerometerCalibrator create(List<StandardDeviationBodyKinematics> measurements) Creates a robust accelerometer calibrator using default robust method.- Parameters:
measurements- list of body kinematics measurements taken at a given position with different unknown orientations and containing the standard deviations of accelerometer and gyroscope measurements.- Returns:
- a robust accelerometer calibrator.
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create
Creates a robust accelerometer calibrator using default robust method.- Parameters:
commonAxisUsed- indicates whether z-axis is assumed to be common for accelerometer and gyroscope.- Returns:
- a robust accelerometer calibrator.
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create
Creates a robust accelerometer calibrator using default robust method.- Parameters:
bias- known accelerometer bias. This must have length 3 and is expressed in meters per squared second (m/s^2).- Returns:
- a robust accelerometer calibrator.
- Throws:
IllegalArgumentException- if provided bias array does not have length 3.
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create
public static RobustKnownBiasAndPositionAccelerometerCalibrator create(com.irurueta.algebra.Matrix bias) Creates a robust accelerometer calibrator using default robust method.- Parameters:
bias- known accelerometer bias.- Returns:
- a robust accelerometer calibrator.
- Throws:
IllegalArgumentException- if provided bias matrix is not 3x1.
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create
public static RobustKnownBiasAndPositionAccelerometerCalibrator create(com.irurueta.algebra.Matrix bias, com.irurueta.algebra.Matrix initialMa) Creates a robust accelerometer calibrator using default robust method.- Parameters:
bias- known accelerometer bias.initialMa- initial scale factors and cross coupling errors matrix.- Returns:
- a robust accelerometer calibrator.
- Throws:
IllegalArgumentException- if either provided bias matrix is not 3x1 or scaling and coupling error matrix is not 3x3.
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computePreliminarySolutions
protected void computePreliminarySolutions(int[] samplesIndices, List<RobustKnownBiasAndPositionAccelerometerCalibrator.PreliminaryResult> solutions) Computes a preliminary solution for a subset of samples picked by a robust estimator.- Parameters:
samplesIndices- indices of samples picked by the robust estimator.solutions- list where estimated preliminary solution will be stored.
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computeGravityNorm
protected double computeGravityNorm()Computes gravity norm for current position.- Returns:
- gravity norm for current position expressed in meters per squared second.
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convertAcceleration
private static double convertAcceleration(double value, com.irurueta.units.AccelerationUnit unit) Converts acceleration value and unit to meters per squared second.- Parameters:
value- acceleration value.unit- unit of acceleration value.- Returns:
- converted value.
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convertAcceleration
private static double convertAcceleration(com.irurueta.units.Acceleration acceleration) Converts acceleration instance to meters per squared second.- Parameters:
acceleration- acceleration instance to be converted.- Returns:
- converted value.
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