Class OneWayGNSSRange
- java.lang.Object
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- org.orekit.estimation.measurements.AbstractMeasurement<T>
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- org.orekit.estimation.measurements.gnss.AbstractOnBoardMeasurement<T>
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- org.orekit.estimation.measurements.gnss.AbstractOneWayGNSSMeasurement<OneWayGNSSRange>
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- org.orekit.estimation.measurements.gnss.OneWayGNSSRange
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- All Implemented Interfaces:
Comparable<ComparableMeasurement>
,ComparableMeasurement
,ObservedMeasurement<OneWayGNSSRange>
,TimeStamped
,ParameterDriversProvider
public class OneWayGNSSRange extends AbstractOneWayGNSSMeasurement<OneWayGNSSRange>
One-way GNSS range measurement.This class can be used in precise orbit determination applications for modeling a range measurement between a GNSS satellite (emitter) and a LEO satellite (receiver).
The one-way GNSS range measurement assumes knowledge of the orbit and the clock offset of the emitting GNSS satellite. For instance, it is possible to use a SP3 file or a GNSS navigation message to recover the satellite's orbit and clock.
This class is very similar to
InterSatellitesRange
measurement class. However, using the one-way GNSS range measurement, the orbit and clock of the emitting GNSS satellite are NOT estimated simultaneously with LEO satellite coordinates.- Since:
- 10.3
- Author:
- Bryan Cazabonne
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Field Summary
Fields Modifier and Type Field Description static String
MEASUREMENT_TYPE
Type of the measurement.
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Constructor Summary
Constructors Constructor Description OneWayGNSSRange(PVCoordinatesProvider remote, double dtRemote, AbsoluteDate date, double range, double sigma, double baseWeight, ObservableSatellite local)
Simple constructor.OneWayGNSSRange(PVCoordinatesProvider remote, QuadraticClockModel remoteClock, AbsoluteDate date, double range, double sigma, double baseWeight, ObservableSatellite local)
Simple constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected EstimatedMeasurement<OneWayGNSSRange>
theoreticalEvaluation(int iteration, int evaluation, SpacecraftState[] states)
Estimate the theoretical value.protected EstimatedMeasurementBase<OneWayGNSSRange>
theoreticalEvaluationWithoutDerivatives(int iteration, int evaluation, SpacecraftState[] states)
Estimate the theoretical value without derivatives.-
Methods inherited from class org.orekit.estimation.measurements.gnss.AbstractOneWayGNSSMeasurement
getRemoteClock, getRemotePV, getRemotePV
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Methods inherited from class org.orekit.estimation.measurements.gnss.AbstractOnBoardMeasurement
computeCommonParametersWith, computeCommonParametersWithout, getRemoteClock
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Methods inherited from class org.orekit.estimation.measurements.AbstractMeasurement
addModifier, addParameterDriver, estimate, estimateWithoutDerivatives, getBaseWeight, getCoordinates, getDate, getDimension, getModifiers, getObservedValue, getParametersDrivers, getSatellites, getTheoreticalStandardDeviation, isEnabled, setEnabled, setObservedValue, signalTimeOfFlightAdjustableEmitter, signalTimeOfFlightAdjustableEmitter, signalTimeOfFlightAdjustableEmitter, signalTimeOfFlightAdjustableEmitter, signalTimeOfFlightAdjustableReceiver, signalTimeOfFlightAdjustableReceiver, signalTimeOfFlightAdjustableReceiver, signalTimeOfFlightAdjustableReceiver
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.orekit.estimation.measurements.ComparableMeasurement
compareTo
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Methods inherited from interface org.orekit.estimation.measurements.ObservedMeasurement
estimateWithoutDerivatives, getMeasurementType
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Methods inherited from interface org.orekit.utils.ParameterDriversProvider
getNbParametersDriversValue, getParameterDriver, getParameters, getParameters, getParameters, getParameters, getParametersAllValues, getParametersAllValues, isSupported
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Methods inherited from interface org.orekit.time.TimeStamped
durationFrom
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Field Detail
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MEASUREMENT_TYPE
public static final String MEASUREMENT_TYPE
Type of the measurement.- See Also:
- Constant Field Values
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Constructor Detail
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OneWayGNSSRange
public OneWayGNSSRange(PVCoordinatesProvider remote, double dtRemote, AbsoluteDate date, double range, double sigma, double baseWeight, ObservableSatellite local)
Simple constructor.- Parameters:
remote
- provider for GNSS satellite which simply emits the signaldtRemote
- clock offset of the GNSS satellite, in secondsdate
- date of the measurementrange
- observed valuesigma
- theoretical standard deviationbaseWeight
- base weightlocal
- satellite which receives the signal and perform the measurement
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OneWayGNSSRange
public OneWayGNSSRange(PVCoordinatesProvider remote, QuadraticClockModel remoteClock, AbsoluteDate date, double range, double sigma, double baseWeight, ObservableSatellite local)
Simple constructor.- Parameters:
remote
- provider for GNSS satellite which simply emits the signalremoteClock
- clock offset of the GNSS satellitedate
- date of the measurementrange
- observed valuesigma
- theoretical standard deviationbaseWeight
- base weightlocal
- satellite which receives the signal and perform the measurement- Since:
- 12.1
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Method Detail
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theoreticalEvaluationWithoutDerivatives
protected EstimatedMeasurementBase<OneWayGNSSRange> 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 classAbstractMeasurement<OneWayGNSSRange>
- Parameters:
iteration
- iteration numberevaluation
- evaluation numberstates
- orbital states at measurement date- Returns:
- theoretical value
- See Also:
AbstractMeasurement.estimate(int, int, SpacecraftState[])
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theoreticalEvaluation
protected EstimatedMeasurement<OneWayGNSSRange> theoreticalEvaluation(int iteration, int evaluation, SpacecraftState[] states)
Estimate the theoretical value.The theoretical value does not have any modifiers applied.
- Specified by:
theoreticalEvaluation
in classAbstractMeasurement<OneWayGNSSRange>
- Parameters:
iteration
- iteration numberevaluation
- evaluation numberstates
- orbital states at measurement date- Returns:
- theoretical value
- See Also:
AbstractMeasurement.estimate(int, int, SpacecraftState[])
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