org.orekit.attitudes
Class BodyCenterPointing

java.lang.Object
  org.orekit.attitudes.AbstractAttitudeLaw
      org.orekit.attitudes.BodyCenterPointing

All Implemented Interfaces:

Serializable, AttitudeLaw, AttitudeProvider

public class BodyCenterPointing
extends AbstractAttitudeLaw

This class handles body center pointing attitude provider.

This class represents the attitude provider where the satellite z axis is pointing to the body frame center.

The object BodyCenterPointing is guaranteed to be immutable.

Author:

Véronique Pommier-Maurussane

See Also:

GroundPointing, Serialized Form

Constructor Summary

BodyCenterPointing()
Creates new instance.

BodyCenterPointing(Frame bodyFrame)
Creates new instance.

Method Summary

Attitude

getAttitude(PVCoordinatesProvider pvProv, AbsoluteDate date, Frame frame) Compute the attitude corresponding to an orbital state.

Methods inherited from class org.orekit.attitudes.AbstractAttitudeLaw

getAttitude, getSpinDerivativesComputation, setSpinDerivativesComputation

Methods inherited from class java.lang.Object

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

Constructor Detail

BodyCenterPointing

public BodyCenterPointing(Frame bodyFrame)

Creates new instance.

Parameters:

bodyFrame - This frame is the pivot in the transformation from an actual frame to the local orbital frame.

BodyCenterPointing

public BodyCenterPointing()

Creates new instance.

The GCRF frame is used as pivot in the transformation from an actual frame to the local orbital frame.

Method Detail

getAttitude

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

Compute the attitude corresponding to an orbital state.

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