Package org.orekit.estimation.measurements.model

Class RaDecModel

java.lang.Object

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. It is passive in the sense that the sensor did not generate the signal in the first place, it is only collecting it.

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, 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)