fr.cnes.sirius.patrius.bodies

Class ConstantRadiusProvider

java.lang.Object

fr.cnes.sirius.patrius.bodies.ConstantRadiusProvider

All Implemented Interfaces:

ApparentRadiusProvider, Serializable

public class ConstantRadiusProvider
extends Object
implements ApparentRadiusProvider

Implementation for constant radius provider.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ConstantRadiusProvider(double radius) Constructor with constant value.

Method Summary

Modifier and Type	Method and Description
double	getApparentRadius(PVCoordinatesProvider pvObserver, AbsoluteDate date, PVCoordinatesProvider occultedBody, AbstractSignalPropagationDetector.PropagationDelayType propagationDelayType) Compute the apparent radius (in meters) of the occulting body from the spacecraft (observer) position.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstantRadiusProvider

public ConstantRadiusProvider(double radius)

Constructor with constant value.

Parameters:

radius - radius value

Method Detail

getApparentRadius

public double getApparentRadius(PVCoordinatesProvider pvObserver,
                                AbsoluteDate date,
                                PVCoordinatesProvider occultedBody,
                                AbstractSignalPropagationDetector.PropagationDelayType propagationDelayType)

Compute the apparent radius (in meters) of the occulting body from the spacecraft (observer) position. Given a plane containing the spacecraft (observer) position, the center of the occulting body and the center of the occulted body, and given a line contained within this plane, passing by the spacecraft (observer) position and tangent to the mesh of the occulting body, the apparent radius corresponds to the length of the line starting from the center of the occulting body, perpendicular to the first given line and ending at the intersection of the two lines.

Please notice that this method will for the moment be used only with an instantaneous propagation delay type.

Specified by:

getApparentRadius in interface ApparentRadiusProvider

Parameters:

pvObserver - the spacecraft (observer) position-velocity

date - the date at which the signal is received by the observer (reception date)

occultedBody - the body which is occulted to the spacecraft (observer) by the occulting body

propagationDelayType - propagation delay type

Returns:

the apparent radius (in meters) of the occulting body from the spacecraft (observer) position