Package org.orekit.attitudes

Class FixedRate

java.lang.Object

org.orekit.attitudes.FixedRate

All Implemented Interfaces:

AttitudeProvider

public class FixedRate
extends Object
implements AttitudeProvider

This class handles a simple attitude provider at constant rate around a fixed axis.

This attitude provider is a simple linear extrapolation from an initial orientation, a rotation axis and a rotation rate. All this elements can be specified as a simple reference attitude.

Instances of this class are guaranteed to be immutable.

Author:

Luc Maisonobe

Constructor Summary

Constructors

Constructor	Description
FixedRate(Attitude referenceAttitude)	Creates a 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.
Attitude	getReferenceAttitude()	Get the reference attitude.

Methods inherited from class java.lang.Object

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

Constructor Detail

FixedRate

public FixedRate(Attitude referenceAttitude)

Creates a new instance.

Parameters:

referenceAttitude - attitude at reference date

Method Detail

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

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

getAttitude

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

Compute the attitude corresponding to an orbital state.

Specified by:

getAttitude in interface AttitudeProvider

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 <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

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

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

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

getReferenceAttitude

public Attitude getReferenceAttitude()

Get the reference attitude.

Returns:

reference attitude