Package org.orekit.attitudes

Class LofOffsetPointing

java.lang.Object

org.orekit.attitudes.GroundPointing

org.orekit.attitudes.LofOffsetPointing

All Implemented Interfaces:

AttitudeProvider, EventDetectorsProvider

public class LofOffsetPointing
extends GroundPointing

This class provides a default attitude provider.

The attitude pointing law is defined by an attitude provider and the satellite axis vector chosen for pointing.

Author:

Véronique Pommier-Maurussane

Field Summary

Fields inherited from interface org.orekit.propagation.events.EventDetectorsProvider

DATATION_ACCURACY

Constructor Summary

Constructors

Constructor	Description
LofOffsetPointing(Frame inertialFrame, BodyShape shape, AttitudeProvider attLaw, Vector3D satPointingVector)	Creates new instance.

Method Summary

Modifier and Type	Method	Description
<T extends CalculusFieldElement<T>> FieldAttitude<T>	getAttitude(FieldPVCoordinatesProvider<T> pvProv, FieldAbsoluteDate<T> date, Frame frame)	Compute the attitude corresponding to an orbital state.
Attitude	getAttitude(PVCoordinatesProvider pvProv, AbsoluteDate date, Frame frame)	Compute the attitude corresponding to an orbital state.
<T extends CalculusFieldElement<T>> FieldRotation<T>	getAttitudeRotation(FieldPVCoordinatesProvider<T> pvProv, FieldAbsoluteDate<T> date, Frame frame)	Compute the attitude-related rotation corresponding to an orbital state.
Rotation	getAttitudeRotation(PVCoordinatesProvider pvProv, AbsoluteDate date, Frame frame)	Compute the attitude-related rotation corresponding to an orbital state.
protected <T extends CalculusFieldElement<T>> FieldVector3D<T>	getTargetPosition(FieldPVCoordinatesProvider<T> pvProv, FieldAbsoluteDate<T> date, Frame frame)	Compute the target point position in specified frame.
protected Vector3D	getTargetPosition(PVCoordinatesProvider pvProv, AbsoluteDate date, Frame frame)	Compute the target point position in specified frame.
<T extends CalculusFieldElement<T>> TimeStampedFieldPVCoordinates<T>	getTargetPV(FieldPVCoordinatesProvider<T> pvProv, FieldAbsoluteDate<T> date, Frame frame)	Compute the target point position/velocity in specified frame.
TimeStampedPVCoordinates	getTargetPV(PVCoordinatesProvider pvProv, AbsoluteDate date, Frame frame)	Compute the target point position/velocity in specified frame.

Methods inherited from class org.orekit.attitudes.GroundPointing

getBodyFrame

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.attitudes.AttitudeProvider

getEventDetectors, getFieldEventDetectors

Methods inherited from interface org.orekit.propagation.events.EventDetectorsProvider

getEventDetectors, getFieldEventDetectors

Constructor Detail

LofOffsetPointing

public LofOffsetPointing(Frame inertialFrame,
                         BodyShape shape,
                         AttitudeProvider attLaw,
                         Vector3D satPointingVector)

Creates new instance.

Parameters:

inertialFrame - frame in which orbital velocities are computed

shape - Body shape

attLaw - Attitude law

satPointingVector - satellite vector defining the pointing direction

Since:

7.1

Method Detail

getAttitude

public Attitude getAttitude(PVCoordinatesProvider pvProv,
                            AbsoluteDate date,
                            Frame frame)

Compute the attitude corresponding to an orbital state.

Specified by:

getAttitude in interface AttitudeProvider

Overrides:

getAttitude in class GroundPointing

Parameters:

pvProv - local position-velocity provider around current date

date - current date

frame - reference frame from which attitude is computed

Returns:

attitude on the specified date and position-velocity state

getAttitude

public <T extends CalculusFieldElement<T>> FieldAttitude<T> getAttitude(FieldPVCoordinatesProvider<T> pvProv,
                                                                        FieldAbsoluteDate<T> date,
                                                                        Frame frame)

Compute the attitude corresponding to an orbital state.

Specified by:

getAttitude in interface AttitudeProvider

Overrides:

getAttitude in class GroundPointing

Type Parameters:

T - type of the field elements

Parameters:

pvProv - local position-velocity provider around current date

date - current date

frame - reference frame from which attitude is computed

Returns:

attitude on the specified date and position-velocity state

getAttitudeRotation

public Rotation getAttitudeRotation(PVCoordinatesProvider pvProv,
                                    AbsoluteDate date,
                                    Frame frame)

Compute the attitude-related rotation corresponding to an orbital state.

Specified by:

getAttitudeRotation in interface AttitudeProvider

Overrides:

getAttitudeRotation in class GroundPointing

Parameters:

pvProv - local position-velocity provider around current date

date - current date

frame - reference frame from which attitude is computed

Returns:

attitude-related rotation on the specified date and position-velocity state

getAttitudeRotation

public <T extends CalculusFieldElement<T>> FieldRotation<T> getAttitudeRotation(FieldPVCoordinatesProvider<T> pvProv,
                                                                                FieldAbsoluteDate<T> date,
                                                                                Frame frame)

Compute the attitude-related rotation corresponding to an orbital state.

Specified by:

getAttitudeRotation in interface AttitudeProvider

Overrides:

getAttitudeRotation in class GroundPointing

Type Parameters:

T - type of the field elements

Parameters:

pvProv - local position-velocity provider around current date

date - current date

frame - reference frame from which attitude is computed

Returns:

rotation on the specified date and position-velocity state

getTargetPV

public TimeStampedPVCoordinates getTargetPV(PVCoordinatesProvider pvProv,
                                            AbsoluteDate date,
                                            Frame frame)

Compute the target point position/velocity in specified frame.

Specified by:

getTargetPV in class GroundPointing

Parameters:

pvProv - provider for PV coordinates

date - date at which target point is requested

frame - frame in which observed ground point should be provided

Returns:

observed ground point position (element 0) and velocity (at index 1) in specified frame

getTargetPosition

protected Vector3D getTargetPosition(PVCoordinatesProvider pvProv,
                                     AbsoluteDate date,
                                     Frame frame)

Compute the target point position in specified frame.

Overrides:

getTargetPosition in class GroundPointing

Parameters:

pvProv - provider for PV coordinates

date - date at which target point is requested

frame - frame in which observed ground point should be provided

Returns:

observed ground point position in specified frame

getTargetPV

public <T extends CalculusFieldElement<T>> TimeStampedFieldPVCoordinates<T> getTargetPV(FieldPVCoordinatesProvider<T> pvProv,
                                                                                        FieldAbsoluteDate<T> date,
                                                                                        Frame frame)

Compute the target point position/velocity in specified frame.

Specified by:

getTargetPV in class GroundPointing

Type Parameters:

T - type of the field elements

Parameters:

pvProv - provider for PV coordinates

date - date at which target point is requested

frame - frame in which observed ground point should be provided

Returns:

observed ground point position (element 0) and velocity (at index 1) in specified frame

getTargetPosition

protected <T extends CalculusFieldElement<T>> FieldVector3D<T> getTargetPosition(FieldPVCoordinatesProvider<T> pvProv,
                                                                                 FieldAbsoluteDate<T> date,
                                                                                 Frame frame)

Compute the target point position in specified frame.

Overrides:

getTargetPosition in class GroundPointing

Type Parameters:

T - type of the field elements

Parameters:

pvProv - provider for PV coordinates

date - date at which target point is requested

frame - frame in which observed ground point should be provided

Returns:

observed ground point position in specified frame