Package org.orekit.propagation.relative.clohessywiltshire

Class FieldClohessyWiltshireMatrices<T extends CalculusFieldElement<T>>

java.lang.Object

org.orekit.propagation.relative.clohessywiltshire.FieldClohessyWiltshireMatrices<T>

Type Parameters:

T - Any scalar field.

public class FieldClohessyWiltshireMatrices<T extends CalculusFieldElement<T>>
extends Object

This class stores the 4 sub-matrices of the 6x6 state transition matrix of the Clohessy-Wiltshire equations.

Since:

14.0

Author:

Romain Cuvillon

Constructor Summary

Constructors

Constructor	Description
FieldClohessyWiltshireMatrices(T timeSinceEpoch, FieldMatrix<T> phiRR, FieldMatrix<T> phiRV, FieldMatrix<T> phiVR, FieldMatrix<T> phiVV)	Constructor of the 4 sub-matrices of the 6x6 state transition matrix of the Clohessy-Wiltshire equations.

Method Summary

Modifier and Type	Method	Description
FieldMatrix<T>	getPhiRR()	Get the sub-matrix of the transition matrix φrr(t).
FieldMatrix<T>	getPhiRV()	Get the sub-matrix of the transition matrix φrv(t).
FieldMatrix<T>	getPhiVR()	Get the sub-matrix of the transition matrix φvr(t).
FieldMatrix<T>	getPhiVV()	Get the sub-matrix of the transition matrix φvv(t).
FieldPVCoordinates<T>	transform(FieldPVCoordinates<T> pv)	Transforms the input initial PV expressed in the target's QSW LOF to the PV at the time encoded in the Clohessy-Wiltshire matrices contained in the object.
TimeStampedFieldPVCoordinates<T>	transform(TimeStampedFieldPVCoordinates<T> pvt)	Transforms the input initial PVT expressed in the target's QSW LOF to the PVT at the time encoded in the Clohessy-Wiltshire matrices contained in the object.

Methods inherited from class java.lang.Object

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

Constructor Details

FieldClohessyWiltshireMatrices

public FieldClohessyWiltshireMatrices(T timeSinceEpoch,
 FieldMatrix<T> phiRR,
 FieldMatrix<T> phiRV,
 FieldMatrix<T> phiVR,
 FieldMatrix<T> phiVV)

Constructor of the 4 sub-matrices of the 6x6 state transition matrix of the Clohessy-Wiltshire equations.

δr(t) = φ_rr(t) δr₀ + φ_rv(t) δv₀

δv(t) = φ_vr(t) δr₀ + φ_vv(t) δv₀

Parameters:

timeSinceEpoch - duration in seconds since epoch

phiRR - position to position transition sub-matrix

phiRV - velocity to position transition sub-matrix

phiVR - position to velocity transition sub-matrix

phiVV - velocity to velocity transition sub-matrix

Method Details

getPhiRR

public FieldMatrix<T> getPhiRR()

Get the sub-matrix of the transition matrix φ_rr(t).

Returns:

φ_rr(t) sub-matrix

getPhiRV

public FieldMatrix<T> getPhiRV()

Get the sub-matrix of the transition matrix φ_rv(t).

Returns:

φ_rv(t) sub-matrix

getPhiVR

public FieldMatrix<T> getPhiVR()

Get the sub-matrix of the transition matrix φ_vr(t).

Returns:

φ_vr(t) sub-matrix

getPhiVV

public FieldMatrix<T> getPhiVV()

Get the sub-matrix of the transition matrix φ_vv(t).

Returns:

φ_vv(t) sub-matrix

transform

public TimeStampedFieldPVCoordinates<T> transform(TimeStampedFieldPVCoordinates<T> pvt)

Transforms the input initial PVT expressed in the target's QSW LOF to the PVT at the time encoded in the Clohessy-Wiltshire matrices contained in the object.

pos(t) = Φrr * pos(0) + Φrv * vel(0)

vel(t) = Φvr * pos(0) + Φvv * vel(0)

Parameters:

pvt - input initial PVT expressed in the target's QSW LOF.

Returns:

PVT at the time encoded in the Clohessy-Wiltshire matrices, expressed in the target's QSW LOF.

transform

public FieldPVCoordinates<T> transform(FieldPVCoordinates<T> pv)

Transforms the input initial PV expressed in the target's QSW LOF to the PV at the time encoded in the Clohessy-Wiltshire matrices contained in the object.

pos(t) = Φrr * pos(0) + Φrv * vel(0)

vel(t) = Φvr * pos(0) + Φvv * vel(0)

Parameters:

pv - input initial PV expressed in the target's QSW LOF.

Returns:

PV at the time encoded in the Clohessy-Wiltshire matrices, expressed in the target's QSW LOF.