fr.cnes.sirius.patrius.attitudes

Class SunPointing

java.lang.Object

fr.cnes.sirius.patrius.attitudes.AbstractAttitudeLaw

fr.cnes.sirius.patrius.attitudes.TwoDirectionAttitudeLaw

fr.cnes.sirius.patrius.attitudes.SunPointing

All Implemented Interfaces:

AttitudeLaw, AttitudeProvider, Serializable

public class SunPointing
extends TwoDirectionAttitudeLaw

This class implements a Sun pointing attitude law. The first direction is the satellite-sun direction, the second direction is either the sun poles axis or the normal to the satellite orbit.

Since:

1.2

Version:

$Id: SunPointing.java 17582 2017-05-10 12:58:16Z bignon $

Author:

Julie Anton

See Also:

IDirection, Serialized Form

Concurrency :

unconditionally thread safe

Constructor Summary

Constructors

Constructor and Description
SunPointing(CelestialBodyFrame bodyFrame, Vector3D firstAxis, Vector3D secondAxis) Constructor of the sun pointing attitude law.
SunPointing(CelestialBodyFrame bodyFrame, Vector3D firstAxis, Vector3D secondAxis, PVCoordinatesProvider sun) Constructor of the sun pointing attitude law.
SunPointing(Vector3D firstAxis, Vector3D secondAxis) Constructor of the sun pointing attitude law.
SunPointing(Vector3D firstAxis, Vector3D secondAxis, CelestialBody sun) Constructor of the sun pointing attitude law.

Method Summary

Modifier and Type	Method and Description
String	toString()

Methods inherited from class fr.cnes.sirius.patrius.attitudes.TwoDirectionAttitudeLaw

getAttitude, getFirstAxis, getSecondAxis

Methods inherited from class fr.cnes.sirius.patrius.attitudes.AbstractAttitudeLaw

getSpinDerivativesComputation, setSpinDerivativesComputation

Methods inherited from class java.lang.Object

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

Methods inherited from interface fr.cnes.sirius.patrius.attitudes.AttitudeProvider

computeSpinByFD, computeSpinDerivativeByFD, getAttitude

Constructor Detail

SunPointing

public SunPointing(Vector3D firstAxis,
                   Vector3D secondAxis)
            throws PatriusException

Constructor of the sun pointing attitude law. The first direction is the sun-satellite direction, the second direction is the sun poles axis.

Sun is defined by CelestialBodyFactory.getSun() (JPL ephemeris model).

Parameters:

firstAxis - : satellite axis aligned with the first direction.

secondAxis - : satellite axis aligned at best with the second direction.

Throws:

PatriusException - if the sun cannot be built

SunPointing

public SunPointing(CelestialBodyFrame bodyFrame,
                   Vector3D firstAxis,
                   Vector3D secondAxis)
            throws PatriusException

Constructor of the sun pointing attitude law. The first direction is the sun-satellite direction, the second direction is the normal to the satellite orbit.

Sun is defined by CelestialBodyFactory.getSun() (JPL ephemeris model).

Parameters:

bodyFrame - : celestial body frame associated to the satellite orbit.

firstAxis - : satellite axis aligned with the first direction.

secondAxis - : satellite axis aligned at best with the second direction.

Throws:

PatriusException - if the sun cannot be built

SunPointing

public SunPointing(Vector3D firstAxis,
                   Vector3D secondAxis,
                   CelestialBody sun)
            throws PatriusException

Constructor of the sun pointing attitude law. The first direction is the sun-satellite direction, the second direction is the sun poles axis.

Parameters:

firstAxis - satellite axis aligned with the first direction.

secondAxis - satellite axis aligned at best with the second direction.

sun - sun

Throws:

PatriusException - if the sun cannot be built

SunPointing

public SunPointing(CelestialBodyFrame bodyFrame,
                   Vector3D firstAxis,
                   Vector3D secondAxis,
                   PVCoordinatesProvider sun)
            throws PatriusException

Constructor of the sun pointing attitude law. The first direction is the sun-satellite direction, the second direction is the normal to the satellite orbit.

Parameters:

bodyFrame - celestial body frame associated to the satellite orbit.

firstAxis - satellite axis aligned with the first direction.

secondAxis - satellite axis aligned at best with the second direction.

sun - sun

Throws:

PatriusException - thrown if body inertial frame cannot be built

Method Detail

toString

public String toString()

Overrides:

toString in class Object