Package org.orekit.estimation.measurements.model

Class RaDecModel

java.lang.Object

org.orekit.estimation.measurements.model.AbstractSignalBasedModel

org.orekit.estimation.measurements.model.AbstractAngularMeasurementModel

org.orekit.estimation.measurements.model.RaDecModel

public class RaDecModel
extends AbstractAngularMeasurementModel

Perfect measurement model for right ascension and declination. It is assumed that the signal reception date is known.

Since:

14.0

Author:

Romain Serra

Constructor Summary

Constructors

Constructor	Description
RaDecModel(Frame referenceFrame, SignalTravelTimeModel signalTravelTimeModel)	Constructor.

Method Summary

Modifier and Type	Method	Description
<T extends CalculusFieldElement<T>> T[]	value(Frame frame, FieldVector3D<T> receiverPosition, FieldAbsoluteDate<T> receptionDate, FieldPVCoordinatesProvider<T> emitter)	Compute theoretical measurement with FIeld.
<T extends CalculusFieldElement<T>> T[]	value(Frame frame, FieldVector3D<T> receiverPosition, FieldAbsoluteDate<T> receptionDate, FieldPVCoordinatesProvider<T> emitter, FieldAbsoluteDate<T> approxEmissionDate)	Compute theoretical measurement with FIeld with guess for emission date.
double[]	value(Frame frame, Vector3D receiverPosition, AbsoluteDate receptionDate, PVCoordinatesProvider emitter)	Compute theoretical measurement.
double[]	value(Frame frame, Vector3D receiverPosition, AbsoluteDate receptionDate, PVCoordinatesProvider emitter, AbsoluteDate approxEmissionDate)	Compute theoretical measurement with guess for the emission date.

Methods inherited from class org.orekit.estimation.measurements.model.AbstractAngularMeasurementModel

getEmitterToReceiverVector, getEmitterToReceiverVector

Methods inherited from class org.orekit.estimation.measurements.model.AbstractSignalBasedModel

getSignalTravelTimeModel

Methods inherited from class java.lang.Object

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

Constructor Detail

RaDecModel

public RaDecModel(Frame referenceFrame,
                  SignalTravelTimeModel signalTravelTimeModel)

Constructor.

Parameters:

referenceFrame - reference frame for RA-Dec (must be inertial)

signalTravelTimeModel - time delay computer

Method Detail

value

public double[] value(Frame frame,
                      Vector3D receiverPosition,
                      AbsoluteDate receptionDate,
                      PVCoordinatesProvider emitter)

Compute theoretical measurement.

Parameters:

frame - frame where receiver position is given

receiverPosition - receiver position in input frame at reception time

receptionDate - signal reception date

emitter - signal emitter coordinates provider

Returns:

RA-Dec (radians)

value

public double[] value(Frame frame,
                      Vector3D receiverPosition,
                      AbsoluteDate receptionDate,
                      PVCoordinatesProvider emitter,
                      AbsoluteDate approxEmissionDate)

Compute theoretical measurement with guess for the emission date.

Parameters:

frame - frame where receiver position is given

receiverPosition - receiver position in input frame at reception time

receptionDate - signal reception date

emitter - signal emitter coordinates provider

approxEmissionDate - guess for the emission date (shall be adjusted by signal travel time computer)

Returns:

RA-Dec (radians)

value

public <T extends CalculusFieldElement<T>> T[] value(Frame frame,
                                                     FieldVector3D<T> receiverPosition,
                                                     FieldAbsoluteDate<T> receptionDate,
                                                     FieldPVCoordinatesProvider<T> emitter)

Compute theoretical measurement with FIeld.

Type Parameters:

T - field type

Parameters:

frame - frame where receiver position is given

receiverPosition - receiver position in input frame at reception time

receptionDate - signal reception date

emitter - signal emitter coordinates provider

Returns:

RA-Dec (radians)

value

public <T extends CalculusFieldElement<T>> T[] value(Frame frame,
                                                     FieldVector3D<T> receiverPosition,
                                                     FieldAbsoluteDate<T> receptionDate,
                                                     FieldPVCoordinatesProvider<T> emitter,
                                                     FieldAbsoluteDate<T> approxEmissionDate)

Compute theoretical measurement with FIeld with guess for emission date.

Type Parameters:

T - field type

Parameters:

frame - frame where receiver position is given

receiverPosition - receiver position in input frame at reception time

receptionDate - signal reception date

emitter - signal emitter coordinates provider

approxEmissionDate - guess for the emission date (shall be adjusted by signal travel time computer)

Returns:

RA-Dec (radians)