Package org.orekit.estimation.measurements

Class EstimatedMeasurement<T extends ObservedMeasurement<T>>

java.lang.Object

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

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

Type Parameters:

T - the type of the measurement

All Implemented Interfaces:

Comparable<ComparableMeasurement>, ComparableMeasurement, TimeStamped

public class EstimatedMeasurement<T extends ObservedMeasurement<T>>
extends EstimatedMeasurementBase<T>

Class holding an estimated theoretical value associated to an observed measurement.

Note that derivatives are always computed with respect to Cartesian parameters, regardless of the type of orbital parameters generated by the propagator. Types are converted automatically as the measurements are fetched to the estimation process.

Since:

8.0

Author:

Luc Maisonobe

Nested Class Summary

Nested classes/interfaces inherited from class org.orekit.estimation.measurements.EstimatedMeasurementBase

EstimatedMeasurementBase.Status

Constructor Summary

Constructors

Constructor	Description
EstimatedMeasurement(EstimatedMeasurementBase<T> estimatedMeasurementBase)	Constructor from measurement base.
EstimatedMeasurement(T observedMeasurement, int iteration, int count, SpacecraftState[] states, TimeStampedPVCoordinates[] participants)	Simple constructor.

Method Summary

Modifier and Type	Method	Description
Stream<ParameterDriver>	getDerivativesDrivers()	Get all the drivers with set derivatives.
double[]	getParameterDerivatives(ParameterDriver driver)	Get the partial derivatives of the simulated measurement with respect to a parameter.
double[]	getParameterDerivatives(ParameterDriver driver, AbsoluteDate date)	Get the partial derivatives of the simulated measurement with respect to a parameter.
double[][]	getStateDerivatives(int index)	Get the partial derivatives of the simulated measurement with respect to state Cartesian coordinates.
int	getStateSize()	Get state size.
void	setParameterDerivatives(ParameterDriver driver, AbsoluteDate date, double... parameterDerivatives)	Set the partial derivatives of the simulated measurement with respect to parameter.
void	setParameterDerivatives(ParameterDriver driver, TimeSpanMap<double[]> parameterDerivativesMap)	Set the partial derivatives of the simulated measurement with respect to parameter.
void	setStateDerivatives(int index, double[]... derivatives)	Set the partial derivatives of the simulated measurement with respect to state Cartesian coordinates.

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

getAppliedEffects, getCount, getDate, getEstimatedValue, getIteration, getObservedMeasurement, getObservedValue, getOriginalEstimatedValue, getParticipants, getStates, getStatus, getTimeOffset, modifyEstimatedValue, setEstimatedValue, setObservedValue, setStatus

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.time.TimeStamped

durationFrom

Constructor Details

EstimatedMeasurement

public EstimatedMeasurement(T observedMeasurement,
 int iteration,
 int count,
 SpacecraftState[] states,
 TimeStampedPVCoordinates[] participants)

Simple constructor.

Parameters:

observedMeasurement - associated observed measurement

iteration - iteration number

count - evaluations counter

states - states of the spacecrafts

participants - coordinates of the participants in signal travel order in inertial frame

EstimatedMeasurement

public EstimatedMeasurement(EstimatedMeasurementBase<T> estimatedMeasurementBase)

Constructor from measurement base.

Parameters:

estimatedMeasurementBase - estimated measurement base

Since:

12.1.3

Method Details

getStateSize

public int getStateSize()

Get state size.

Warning, the setStateDerivatives(int, double[][]) method must have been called before this method is called.

Returns:

state size

Since:

10.1

getStateDerivatives

public double[][] getStateDerivatives(int index)

Get the partial derivatives of the simulated measurement with respect to state Cartesian coordinates.

Parameters:

index - index of the state, according to the states passed at construction

Returns:

partial derivatives of the simulated value with respect to state Cartesian coordinates (array of size dimension x 6)

setStateDerivatives

public void setStateDerivatives(int index,
 double[]... derivatives)

Set the partial derivatives of the simulated measurement with respect to state Cartesian coordinates.

Parameters:

index - index of the state, according to the states passed at construction

derivatives - partial derivatives with respect to state Cartesian coordinates

getDerivativesDrivers

public Stream<ParameterDriver> getDerivativesDrivers()

Get all the drivers with set derivatives.

Returns:

all the drivers with set derivatives

Since:

9.0

getParameterDerivatives

public double[] getParameterDerivatives(ParameterDriver driver)
                                 throws OrekitIllegalArgumentException

Get the partial derivatives of the simulated measurement with respect to a parameter.

Parameters:

driver - name of the span of the driver for the parameter for which the derivative wants to be known.

Returns:

partial derivatives of the simulated value

Throws:

OrekitIllegalArgumentException - if parameter is unknown or OrekitIllegalStateException if this function is used on a PDriver having several values driven, in this case the method getParameterDerivatives(ParameterDriver, AbsoluteDate) must be called

getParameterDerivatives

public double[] getParameterDerivatives(ParameterDriver driver,
 AbsoluteDate date)
                                 throws OrekitIllegalArgumentException

Get the partial derivatives of the simulated measurement with respect to a parameter.

Parameters:

driver - name of the span of the driver for the parameter for which the derivative wants to be known.

date - date at which the parameter derivatives wants to be known

Returns:

partial derivatives of the simulated value

Throws:

OrekitIllegalArgumentException - if parameter is unknown

setParameterDerivatives

public void setParameterDerivatives(ParameterDriver driver,
 AbsoluteDate date,
 double... parameterDerivatives)

Set the partial derivatives of the simulated measurement with respect to parameter.

Parameters:

driver - name of the span of the driver for the parameter for which the derivative wants to be known.

date - date at which the parameterDerivative wants to be set

parameterDerivatives - partial derivatives with respect to parameter

setParameterDerivatives

public void setParameterDerivatives(ParameterDriver driver,
 TimeSpanMap<double[]> parameterDerivativesMap)

Set the partial derivatives of the simulated measurement with respect to parameter.

Parameters:

driver - driver for the parameter

parameterDerivativesMap - partial derivatives with respect to parameter