Package org.orekit.estimation.measurements.gnss

Class InterSatellitesOneWayRangeRate

java.lang.Object

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

org.orekit.estimation.measurements.SignalBasedMeasurement<InterSatellitesOneWayRangeRate>

org.orekit.estimation.measurements.gnss.AbstractInterSatellitesMeasurement<InterSatellitesOneWayRangeRate>

org.orekit.estimation.measurements.gnss.InterSatellitesOneWayRangeRate

All Implemented Interfaces:

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

public class InterSatellitesOneWayRangeRate
extends AbstractInterSatellitesMeasurement<InterSatellitesOneWayRangeRate>

One way range-rate measurement between two satellites.

Since:

12.1

Author:

Luc Maisonobe

Field Summary

Fields

Modifier and Type	Field	Description
static final String	MEASUREMENT_TYPE	Type of the measurement.

Constructor Summary

Constructors

Constructor	Description
InterSatellitesOneWayRangeRate(ObservableSatellite local, ObservableSatellite remote, AbsoluteDate date, double rangeRate, double sigma, double baseWeight)	Constructor with default signal travel time model.
InterSatellitesOneWayRangeRate(ObservableSatellite local, ObservableSatellite remote, AbsoluteDate date, double rangeRate, double sigma, double baseWeight, SignalTravelTimeModel signalTravelTimeModel)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected EstimatedMeasurement<InterSatellitesOneWayRangeRate>	theoreticalEvaluation(int iteration, int evaluation, SpacecraftState[] states)	Estimate the theoretical value.
protected EstimatedMeasurementBase<InterSatellitesOneWayRangeRate>	theoreticalEvaluationWithoutDerivatives(int iteration, int evaluation, SpacecraftState[] states)	Estimate the theoretical value without derivatives.

Methods inherited from class org.orekit.estimation.measurements.gnss.AbstractInterSatellitesMeasurement

getRemoteClock, getRemoteClock, getRemotePV, getRemotePV

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

getSignalTravelTimeModel, isTwoWay

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

addModifier, addParameterDriver, addParametersDrivers, estimate, estimateWithoutDerivatives, getCoordinates, getDate, getMeasurementQuality, getModifiers, getObservedValue, getParameterIndices, getParametersDrivers, getSatellites, isEnabled, setEnabled, setObservedValue

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, getBaseWeight, getDimension, getMeasurementType, getTheoreticalStandardDeviation

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

Field Details

MEASUREMENT_TYPE

public static final String MEASUREMENT_TYPE

Type of the measurement.

See Also:

• Constant Field Values

Constructor Details

InterSatellitesOneWayRangeRate

public InterSatellitesOneWayRangeRate(ObservableSatellite local,
 ObservableSatellite remote,
 AbsoluteDate date,
 double rangeRate,
 double sigma,
 double baseWeight,
 SignalTravelTimeModel signalTravelTimeModel)

Constructor.

Parameters:

local - satellite which receives the signal and performs the measurement

remote - remote satellite which simply emits the signal

date - date of the measurement

rangeRate - observed value (m/s)

sigma - theoretical standard deviation

baseWeight - base weight

signalTravelTimeModel - signal travel time model

Since:

14.0

InterSatellitesOneWayRangeRate

public InterSatellitesOneWayRangeRate(ObservableSatellite local,
 ObservableSatellite remote,
 AbsoluteDate date,
 double rangeRate,
 double sigma,
 double baseWeight)

Constructor with default signal travel time model.

Parameters:

local - satellite which receives the signal and performs the measurement

remote - remote satellite which simply emits the signal

date - date of the measurement

rangeRate - observed value (m/s)

sigma - theoretical standard deviation

baseWeight - base weight

Method Details

theoreticalEvaluationWithoutDerivatives

protected EstimatedMeasurementBase<InterSatellitesOneWayRangeRate> theoreticalEvaluationWithoutDerivatives(int iteration,
 int evaluation,
 SpacecraftState[] states)

Estimate the theoretical value without derivatives. The default implementation uses the computation with derivatives and ought to be overwritten for performance.

The theoretical value does not have any modifiers applied.

Overrides:

theoreticalEvaluationWithoutDerivatives in class AbstractMeasurement<InterSatellitesOneWayRangeRate>

Parameters:

iteration - iteration number

evaluation - evaluation number

states - orbital states at measurement date

Returns:

theoretical value

See Also:

• AbstractMeasurement.estimate(int, int, SpacecraftState[])

theoreticalEvaluation

protected EstimatedMeasurement<InterSatellitesOneWayRangeRate> theoreticalEvaluation(int iteration,
 int evaluation,
 SpacecraftState[] states)

Estimate the theoretical value.

The theoretical value does not have any modifiers applied.

Specified by:

theoreticalEvaluation in class AbstractMeasurement<InterSatellitesOneWayRangeRate>

Parameters:

iteration - iteration number

evaluation - evaluation number

states - orbital states at measurement date

Returns:

theoretical value

See Also:

• AbstractMeasurement.estimate(int, int, SpacecraftState[])