fr.cnes.sirius.patrius.signalpropagation

Class SignalPropagationModel

java.lang.Object

fr.cnes.sirius.patrius.signalpropagation.SignalPropagationModel

public class SignalPropagationModel
extends Object

Model for the computation of a signal propagation vector and toolbox for the different corrections to be applied to it.

Since:

1.2

Version:

$Id$

Author:

Thomas Trapier

Concurrency :

not thread-safe

Concurrency comment :

use of the frames tree

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SignalPropagationModel.FixedDate the fixed date of computation

Constructor Summary

Constructors

Constructor and Description
SignalPropagationModel(Frame frame, double threshold) Constructor of the signal propagation model.

Method Summary

Modifier and Type	Method and Description
SignalPropagation	computeSignalPropagation(PVCoordinatesProvider emitter, PVCoordinatesProvider receiver, AbsoluteDate date, SignalPropagationModel.FixedDate fixedDateType) Computes the signal propagation object in the void at a particular date
double	getSignalTropoCorrection(TroposphericCorrection correction, SignalPropagation signal, TopocentricFrame topo) Computes the tropospheric effects corrections to be applied to a given SignalPropagation object.

Methods inherited from class java.lang.Object

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

Constructor Detail

SignalPropagationModel

public SignalPropagationModel(Frame frame,
                              double threshold)

Constructor of the signal propagation model.

Parameters:

frame - the work frame : must be inertial and invariant over time

threshold - the iterative computation algorithm convergence threshold: propagation time precision required

Throws:

IllegalArgumentException - if the provided frame is not pseudo-inertial

Method Detail

computeSignalPropagation

public final SignalPropagation computeSignalPropagation(PVCoordinatesProvider emitter,
                                                        PVCoordinatesProvider receiver,
                                                        AbsoluteDate date,
                                                        SignalPropagationModel.FixedDate fixedDateType)
                                                 throws PatriusException

Computes the signal propagation object in the void at a particular date

Parameters:

emitter - the PVCoordinatesProvider of the emitter object

receiver - the PVCoordinatesProvider of the receiver object

date - the emission or reception date

fixedDateType - type of the previous given date : emission or reception

Returns:

the signal propagation object

Throws:

PatriusException - if a problem occurs during PVCoodinates providers manipulations

getSignalTropoCorrection

public double getSignalTropoCorrection(TroposphericCorrection correction,
                                       SignalPropagation signal,
                                       TopocentricFrame topo)
                                throws PatriusException

Computes the tropospheric effects corrections to be applied to a given SignalPropagation object.

Parameters:

correction - the tropospheric correction model

signal - the signal to correct

topo - the ground antenna topocentric frame

Returns:

the signal delay correction [s]

Throws:

PatriusException - if frame transformation problem occurs