Package org.orekit.estimation.measurements

Class MultiplexedMeasurement

java.lang.Object

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

org.orekit.estimation.measurements.MultiplexedMeasurement

All Implemented Interfaces:

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

public class MultiplexedMeasurement
extends AbstractMeasurement<MultiplexedMeasurement>

Class multiplexing several measurements as one.

Date comes from the first measurement, observed and estimated values result from gathering all underlying measurements values.

Since:

10.1

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
MultiplexedMeasurement(List<ObservedMeasurement<?>> measurements)	Simple constructor.

Method Summary

Modifier and Type	Method	Description
List<EstimatedMeasurement<?>>	getEstimatedMeasurements()	Get the underlying estimated measurements.
List<EstimatedMeasurementBase<?>>	getEstimatedMeasurementsWithoutDerivatives()	Get the underlying estimated measurements without derivatives.
List<ObservedMeasurement<?>>	getMeasurements()	Get the underlying measurements.
int	getMultiplexedStateIndex(int measurementIndex, int underlyingStateIndex)	Get the spacecraft state index in the multiplexed measurement.
int	getUnderlyingStateIndex(int measurementIndex, int multiplexedStateIndex)	Get the spacecraft state index in the underlying measurement.
protected EstimatedMeasurement<MultiplexedMeasurement>	theoreticalEvaluation(int iteration, int evaluation, SpacecraftState[] states)	Estimate the theoretical value.
protected EstimatedMeasurementBase<MultiplexedMeasurement>	theoreticalEvaluationWithoutDerivatives(int iteration, int evaluation, SpacecraftState[] states)	Estimate the theoretical value without derivatives.

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

MultiplexedMeasurement

public MultiplexedMeasurement(List<ObservedMeasurement<?>> measurements)

Simple constructor.

Parameters:

measurements - measurements to multiplex

Since:

10.1

Method Details

getMeasurements

public List<ObservedMeasurement<?>> getMeasurements()

Get the underlying measurements.

Returns:

underlying measurements

getEstimatedMeasurementsWithoutDerivatives

public List<EstimatedMeasurementBase<?>> getEstimatedMeasurementsWithoutDerivatives()

Get the underlying estimated measurements without derivatives.

Returns:

underlying estimated measurements without derivatives

Since:

12.0

getEstimatedMeasurements

public List<EstimatedMeasurement<?>> getEstimatedMeasurements()

Get the underlying estimated measurements.

Returns:

underlying estimated measurements

getUnderlyingStateIndex

public int getUnderlyingStateIndex(int measurementIndex,
 int multiplexedStateIndex)

Get the spacecraft state index in the underlying measurement.

Parameters:

measurementIndex - index of the underlying measurement

multiplexedStateIndex - index of the spacecraft state in the multiplexed array

Returns:

spacecraft state index in the underlying measurement

Since:

13.0

getMultiplexedStateIndex

public int getMultiplexedStateIndex(int measurementIndex,
 int underlyingStateIndex)

Get the spacecraft state index in the multiplexed measurement.

Parameters:

measurementIndex - index of the underlying measurement

underlyingStateIndex - index of the spacecraft state in the underlying array

Returns:

spacecraft state index in the multiplexed measurement

Since:

13.0

theoreticalEvaluationWithoutDerivatives

protected EstimatedMeasurementBase<MultiplexedMeasurement> 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<MultiplexedMeasurement>

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<MultiplexedMeasurement> 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<MultiplexedMeasurement>

Parameters:

iteration - iteration number

evaluation - evaluation number

states - orbital states at measurement date

Returns:

theoretical value

See Also:

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