Package org.orekit.estimation.measurements.signal

Class TwoLegsSignalTravelTimer

java.lang.Object

org.orekit.estimation.measurements.signal.TwoLegsSignalTravelTimer

public class TwoLegsSignalTravelTimer
extends Object

Class for two-way signal travel time. A signal is emitted, received a first time (relay/reflection) and received again a final time. There is no further assumption.

Since:

14.0

Author:

Romain Serra

Constructor Summary

Constructors

Constructor	Description
TwoLegsSignalTravelTimer(SignalTravelTimeModel signalTravelTimeModel)	Constructor.

Method Summary

Modifier and Type	Method	Description
<T extends CalculusFieldElement<T>> T[]	computeDelays(Frame frame, FieldVector3D<T> receiverPosition, FieldAbsoluteDate<T> receptionDate, FieldPVCoordinatesProvider<T> relay, FieldAbsoluteDate<T> approxRelayDate, FieldPVCoordinatesProvider<T> emitter, FieldAbsoluteDate<T> approxEmissionDate)	Compute first and second leg delays.
<T extends CalculusFieldElement<T>> T[]	computeDelays(Frame frame, FieldVector3D<T> receiverPosition, FieldAbsoluteDate<T> receptionDate, FieldPVCoordinatesProvider<T> relay, FieldPVCoordinatesProvider<T> emitter)	Compute first and second leg delays without guess.
double[]	computeDelays(Frame frame, Vector3D receiverPosition, AbsoluteDate receptionDate, PVCoordinatesProvider relay, AbsoluteDate approxRelayDate, PVCoordinatesProvider emitter, AbsoluteDate approxEmissionDate)	Compute first and second leg delays.
double[]	computeDelays(Frame frame, Vector3D receiverPosition, AbsoluteDate receptionDate, PVCoordinatesProvider relay, PVCoordinatesProvider emitter)	Compute first and second leg delays without guess.

Methods inherited from class java.lang.Object

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

Constructor Detail

TwoLegsSignalTravelTimer

public TwoLegsSignalTravelTimer(SignalTravelTimeModel signalTravelTimeModel)

Constructor.

Parameters:

signalTravelTimeModel - time delay computer

Method Detail

computeDelays

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

Compute first and second leg delays.

Parameters:

frame - frame where position is given

receiverPosition - end receiver position (at reception)

receptionDate - signal end reception date

relay - signal relay (initial reception) coordinates provider

approxRelayDate - guess for the relay date

emitter - signal initial emitter coordinates provider

approxEmissionDate - guess for the emission date

Returns:

delays on both legs in chronological order (s)

computeDelays

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

Compute first and second leg delays without guess.

Parameters:

frame - frame where position is given

receiverPosition - end receiver position (at reception)

receptionDate - signal end reception date

relay - signal relay (initial reception) coordinates provider

emitter - signal initial emitter coordinates provider

Returns:

delays on both legs in chronological order (s)

computeDelays

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

Compute first and second leg delays.

Type Parameters:

T - field type

Parameters:

frame - frame where position is given

receiverPosition - end receiver position (at reception)

receptionDate - signal end reception date

relay - signal relay (initial reception, second emission) coordinates provider

approxRelayDate - guess for the relay date

emitter - signal initial emitter coordinates provider

approxEmissionDate - guess for the emission date

Returns:

delays on both legs in chronological order (s)

computeDelays

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

Compute first and second leg delays without guess.

Type Parameters:

T - field type

Parameters:

frame - frame where position is given

receiverPosition - end receiver position (at reception)

receptionDate - signal end reception date

relay - signal relay (initial reception, second emission) coordinates provider

emitter - signal initial emitter coordinates provider

Returns:

delays on both legs in chronological order (s)