Package org.orekit.estimation.measurements

Class GroundBasedAngularMeasurement<T extends ObservedMeasurement<T>>

java.lang.Object

org.orekit.estimation.measurements.AbstractMeasurement<T>

org.orekit.estimation.measurements.GroundReceiverMeasurement<T>

org.orekit.estimation.measurements.GroundBasedAngularMeasurement<T>

All Implemented Interfaces:

Comparable<ComparableMeasurement>, ComparableMeasurement, ObservedMeasurement<T>, TimeStamped, ParameterDriversProvider

Direct Known Subclasses:

AngularAzEl, AngularRaDec

public abstract class GroundBasedAngularMeasurement<T extends ObservedMeasurement<T>>
extends GroundReceiverMeasurement<T>

Abstract class for ground-based angular measurements, when the sensor receives the signal.

Since:

14.0

Author:

Romain Serra

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	GroundBasedAngularMeasurement(GroundStation station, AbsoluteDate date, double[] angular, double[] sigma, double[] baseWeight, SignalTravelTimeModel signalTravelTimeModel, ObservableSatellite satellite)	Simple constructor.

Method Summary

Modifier and Type	Method	Description
protected void	fillDerivatives(double[] firstAngleDerivatives, double[] secondAngleDerivatives, Map<String,Integer> paramIndices, EstimatedMeasurement<T> estimatedMeasurement)	Method filling derivatives in the estimated measurement.
protected void	fillEstimatedMeasurement(Gradient firstAngle, Gradient secondAngle, Map<String,Integer> paramIndices, EstimatedMeasurement<T> estimatedMeasurement)	Method filling estimated measurement.
GroundStation	getStation()	Get the ground station that receives the signal.
protected double	wrapFirstAngle(double baseAngle)	Wrap angle according to observed one.
protected Gradient	wrapFirstAngle(Gradient baseAngle)	Wrap angle according to observed one.

Methods inherited from class org.orekit.estimation.measurements.GroundReceiverMeasurement

computeEmissionDate, computeEmissionDateField, getCorrectedReceptionDate, getCorrectedReceptionDateField, getParameterIndices, getReceiverStation

Methods inherited from class org.orekit.estimation.measurements.AbstractMeasurement

addModifier, addParameterDriver, addParametersDrivers, estimate, estimateWithoutDerivatives, getBaseWeight, getCoordinates, getDate, getDimension, getModifiers, getObservedValue, getParametersDrivers, getSatellites, getSignalTravelTimeModel, getTheoreticalStandardDeviation, isEnabled, isTwoWay, setEnabled, setObservedValue, theoreticalEvaluation, theoreticalEvaluationWithoutDerivatives

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.orekit.estimation.measurements.ComparableMeasurement

compareTo

Methods inherited from interface org.orekit.estimation.measurements.ObservedMeasurement

estimateWithoutDerivatives, getMeasurementType

Methods inherited from interface org.orekit.utils.ParameterDriversProvider

getNbParametersDriversValue, getParameterDriver, getParameters, getParameters, getParameters, getParameters, getParametersAllValues, getParametersAllValues, isSupported

Methods inherited from interface org.orekit.time.TimeStamped

durationFrom

Constructor Detail

GroundBasedAngularMeasurement

protected GroundBasedAngularMeasurement(GroundStation station,
                                        AbsoluteDate date,
                                        double[] angular,
                                        double[] sigma,
                                        double[] baseWeight,
                                        SignalTravelTimeModel signalTravelTimeModel,
                                        ObservableSatellite satellite)

Simple constructor.

Parameters:

station - ground station from which measurement is performed

signalTravelTimeModel - signal travel time model

date - date of the measurement

angular - observed value

sigma - theoretical standard deviation

baseWeight - base weight

satellite - satellite related to this measurement

Method Detail

getStation

public final GroundStation getStation()

Get the ground station that receives the signal.

Returns:

ground station

wrapFirstAngle

protected double wrapFirstAngle(double baseAngle)

Wrap angle according to observed one.

Parameters:

baseAngle - base angle

Returns:

wrapped angle

wrapFirstAngle

protected Gradient wrapFirstAngle(Gradient baseAngle)

Wrap angle according to observed one.

Parameters:

baseAngle - base angle

Returns:

wrapped angle

fillEstimatedMeasurement

protected void fillEstimatedMeasurement(Gradient firstAngle,
                                        Gradient secondAngle,
                                        Map<String,Integer> paramIndices,
                                        EstimatedMeasurement<T> estimatedMeasurement)

Method filling estimated measurement.

Parameters:

firstAngle - first angle

secondAngle - second angle

paramIndices - mapping between parameter name and variable index

estimatedMeasurement - object to fill

fillDerivatives

protected void fillDerivatives(double[] firstAngleDerivatives,
                               double[] secondAngleDerivatives,
                               Map<String,Integer> paramIndices,
                               EstimatedMeasurement<T> estimatedMeasurement)

Method filling derivatives in the estimated measurement.

Parameters:

firstAngleDerivatives - first angle derivatives

secondAngleDerivatives - second angle derivatives

paramIndices - mapping between parameter name and variable index

estimatedMeasurement - object to fill