Package org.orekit.attitudes

Class GroundPointTarget

java.lang.Object

org.orekit.attitudes.GroundPointTarget

All Implemented Interfaces:

TargetProvider

public class GroundPointTarget
extends Object
implements TargetProvider

Ground point target for AlignedAndConstrained.

Since:

12.2

Author:

Luc Maisonobe

Constructor Summary

Constructors

Constructor	Description
GroundPointTarget(Vector3D location)	Simple constructor.

Method Summary

Modifier and Type	Method	Description
<T extends CalculusFieldElement<T>> FieldVector3D<FieldUnivariateDerivative2<T>>	getDerivative2TargetDirection(ExtendedPositionProvider sun, OneAxisEllipsoid earth, TimeStampedFieldPVCoordinates<T> pv, Frame frame)	Get a target vector.
FieldVector3D<UnivariateDerivative2>	getDerivative2TargetDirection(ExtendedPositionProvider sun, OneAxisEllipsoid earth, TimeStampedPVCoordinates pv, Frame frame)	Get a target vector.
<T extends CalculusFieldElement<T>> FieldVector3D<T>	getTargetDirection(ExtendedPositionProvider sun, OneAxisEllipsoid earth, TimeStampedFieldPVCoordinates<T> pv, Frame frame)	Get a target vector.
Vector3D	getTargetDirection(ExtendedPositionProvider sun, OneAxisEllipsoid earth, TimeStampedPVCoordinates pv, Frame frame)	Get a target vector.

Methods inherited from class java.lang.Object

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

Constructor Detail

GroundPointTarget

public GroundPointTarget(Vector3D location)

Simple constructor.

Parameters:

location - location of the target in Earth frame

Method Detail

getDerivative2TargetDirection

public FieldVector3D<UnivariateDerivative2> getDerivative2TargetDirection(ExtendedPositionProvider sun,
                                                                          OneAxisEllipsoid earth,
                                                                          TimeStampedPVCoordinates pv,
                                                                          Frame frame)

Get a target vector.

Specified by:

getDerivative2TargetDirection in interface TargetProvider

Parameters:

sun - Sun model

earth - Earth model

pv - spacecraft position and velocity

frame - inertial frame

Returns:

target direction in the spacecraft state frame, with second order time derivative

getTargetDirection

public Vector3D getTargetDirection(ExtendedPositionProvider sun,
                                   OneAxisEllipsoid earth,
                                   TimeStampedPVCoordinates pv,
                                   Frame frame)

Get a target vector.

Specified by:

getTargetDirection in interface TargetProvider

Parameters:

sun - Sun model

earth - Earth model

pv - spacecraft position and velocity

frame - inertial frame

Returns:

target direction in the spacecraft state frame

getDerivative2TargetDirection

public <T extends CalculusFieldElement<T>> FieldVector3D<FieldUnivariateDerivative2<T>> getDerivative2TargetDirection(ExtendedPositionProvider sun,
                                                                                                                      OneAxisEllipsoid earth,
                                                                                                                      TimeStampedFieldPVCoordinates<T> pv,
                                                                                                                      Frame frame)

Get a target vector.

Specified by:

getDerivative2TargetDirection in interface TargetProvider

Type Parameters:

T - type of the field element

Parameters:

sun - Sun model

earth - Earth model

pv - spacecraft position and velocity

frame - inertial frame

Returns:

target direction in the spacecraft state frame, with second order time derivative

getTargetDirection

public <T extends CalculusFieldElement<T>> FieldVector3D<T> getTargetDirection(ExtendedPositionProvider sun,
                                                                               OneAxisEllipsoid earth,
                                                                               TimeStampedFieldPVCoordinates<T> pv,
                                                                               Frame frame)

Get a target vector.

Specified by:

getTargetDirection in interface TargetProvider

Type Parameters:

T - type of the field element

Parameters:

sun - Sun model

earth - Earth model

pv - spacecraft position and velocity

frame - inertial frame

Returns:

target direction in the spacecraft state frame