org.orekit.attitudes

Class FixedRate

java.lang.Object

org.orekit.attitudes.FixedRate

All Implemented Interfaces:

Serializable, 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

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
FixedRate(Attitude referenceAttitude) Creates a new instance.

Method Summary

Modifier and Type	Method and Description
Attitude	getAttitude(PVCoordinatesProvider pvProv, AbsoluteDate date, Frame frame) Compute the attitude 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

getAttitude

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

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 attitude on the specified date and position-velocity state

Throws:

OrekitException - if attitude cannot be computed

getReferenceAttitude

public Attitude getReferenceAttitude()

Get the reference attitude.

Returns:

reference attitude