vega.uplink.pointing.attitudes

Class Specular

java.lang.Object

CompositeDataset

vega.uplink.pointing.PointingElement

vega.uplink.pointing.PointingAttitude

vega.uplink.pointing.attitudes.Specular

public class Specular
extends PointingAttitude

Points the boresight to the specular point wrt. Earth on an elliptical surface defined relative to the centre of CG.

Field Summary

Fields inherited from class vega.uplink.pointing.PointingAttitude

ATTITUDE_TAG, POINTING_ATTITUDE_TYPE_CAPTURE, POINTING_ATTITUDE_TYPE_ILLUMINATEDPOINT, POINTING_ATTITUDE_TYPE_INERTIAL, POINTING_ATTITUDE_TYPE_LIMB, POINTING_ATTITUDE_TYPE_SPECULAR, POINTING_ATTITUDE_TYPE_TERMINATOR, POINTING_ATTITUDE_TYPE_TRACK, POINTING_ATTITUDE_TYPE_VELOCITY, POWEROPTIMIZED_TAG, REF_TAG

Constructor Summary

Constructors

Constructor and Description
Specular()
Specular(Boresight boresight, PhaseAngle phaseAngle, Surface surface) Generates an attitude that points the boresight to the specular point wrt.
Specular(Boresight boresight, PhaseAngle phaseAngle, Surface surface, OffsetAngles oAngles) Generates an attitude that points the boresight to the specular point wrt.
Specular(Boresight boresight, PhaseAngle phaseAngle, Surface surface, OffsetAngles oAngles, OffsetRefAxis oRefAxis) Generates an attitude that points the boresight to the specular point wrt.
Specular(PointingElement org)
Specular(Surface surface) Generates an attitude that points the boresight to the specular point wrt.

Method Summary

Methods

Modifier and Type	Method and Description
Specular	copy()
Surface	getSurface() Get the elliptical surface for which the specular point wrt.
void	setSurface(Surface surface) Set the elliptical surface for which the specular point wrt.

Methods inherited from class vega.uplink.pointing.PointingAttitude

getAttitudeType, getBoresight, getOffsetAngles, getOffsetRefAxis, getPhaseAngle, setBoresight, SetOffset, setPhaseAngle

Methods inherited from class vega.uplink.pointing.PointingElement

addAttribute, addChild, asDataset, copyFrom, equals, getAttribute, getAttributes, getChild, getChildren, getDescription, getFirstLevelTextContent, getName, getValue, hasAttributtes, hasChildren, readFrom, regenerate, removeAttribute, removeAttribute, setDescription, setValue, toString, toStringParameter, toXml, validate

Methods inherited from class java.lang.Object

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

Constructor Detail

Specular

public Specular(PointingElement org)

Specular

public Specular(Boresight boresight,
        PhaseAngle phaseAngle,
        Surface surface,
        OffsetAngles oAngles,
        OffsetRefAxis oRefAxis)

Generates an attitude that points the boresight to the specular point wrt. Earth on an elliptical surface defined relative to the centre of CG.

Parameters:

boresight - Vector defined in SC frame that shall be pointed to the target

phaseAngle - Rule that fixes the degree of freedom around the boresight.

surface - Elliptical surface for which the specular point wrt. Earth is calculated.

oAngles - OffsetAngles

oRefAxis - defines together with the boresight two axes in SC frame around which the rotations are performed. offsetRefAxis is of type direction vector. In the following these axes are called offset-x-axis and offset-y-axis. The offset-y-axis is the unit vector along the cross product of boresight and offsetRefAxis. The offset-x-axis is defined such that offset-x-axis, offset-y-axis and boresight form a right handed orthogonal frame. If for offsetRefAxis a direction vector is specified that is defined relative to inertial frame then it is converted to SC frame by using the basic pointing without offset rotations. The resulting SC attitude with offset rotations is given by the basic pointing rotated right handed first around the offset-x-axis by minus the y-angle and then a right handed rotation around the offset-y-axis by the x-angle. This convention is chosen because a positive x and y-angle rotate the boresight towards the offset-x-axis and y-axis, respectively

Specular

public Specular(Boresight boresight,
        PhaseAngle phaseAngle,
        Surface surface,
        OffsetAngles oAngles)

Generates an attitude that points the boresight to the specular point wrt. Earth on an elliptical surface defined relative to the centre of CG.

Parameters:

boresight - Vector defined in SC frame that shall be pointed to the target

phaseAngle - Rule that fixes the degree of freedom around the boresight.

surface - Elliptical surface for which the specular point wrt. Earth is calculated.

oAngles - OffsetAngles

Specular

public Specular(Boresight boresight,
        PhaseAngle phaseAngle,
        Surface surface)

Generates an attitude that points the boresight to the specular point wrt. Earth on an elliptical surface defined relative to the centre of CG.

Parameters:

boresight - Vector defined in SC frame that shall be pointed to the target

phaseAngle - Rule that fixes the degree of freedom around the boresight.

surface - Elliptical surface for which the specular point wrt. Earth is calculated.

Specular

public Specular(Surface surface)

Generates an attitude that points the boresight to the specular point wrt. Earth on an elliptical surface defined relative to the centre of CG.

Parameters:

surface - Elliptical surface for which the specular point wrt. Earth is calculated.

Specular

public Specular()

Method Detail

copy

public Specular copy()

Overrides:

copy in class PointingAttitude

setSurface

public void setSurface(Surface surface)

Set the elliptical surface for which the specular point wrt. Earth is calculated.

Parameters:

surface -

getSurface

public Surface getSurface()

Get the elliptical surface for which the specular point wrt. Earth is calculated.

Parameters:

surface -