Package org.orekit.propagation.events

Class CylindricalShadowEclipseDetector

java.lang.Object

org.orekit.propagation.events.AbstractDetector<CylindricalShadowEclipseDetector>

org.orekit.propagation.events.CylindricalShadowEclipseDetector

All Implemented Interfaces:

EventDetector

public class CylindricalShadowEclipseDetector
extends AbstractDetector<CylindricalShadowEclipseDetector>

Event detector for eclipses from a single, infinitely-distant light source, occulted by a spherical central body. The shadow region is cylindrical, a model less accurate than a conical one but more computationally-performant.

The so-called g function is negative in eclipse, positive otherwise.

Since:

12.1

Author:

Romain Serra

See Also:

EclipseDetector

Field Summary

Fields inherited from class org.orekit.propagation.events.AbstractDetector

DEFAULT_MAX_ITER, DEFAULT_MAXCHECK, DEFAULT_THRESHOLD

Constructor Summary

Constructors

Constructor	Description
CylindricalShadowEclipseDetector(PVCoordinatesProvider sun, double occultingBodyRadius, AdaptableInterval maxCheck, double threshold, int maxIter, EventHandler handler)	Constructor.
CylindricalShadowEclipseDetector(PVCoordinatesProvider sun, double occultingBodyRadius, EventHandler handler)	Constructor with default detection settings.

Method Summary

Modifier and Type	Method	Description
protected CylindricalShadowEclipseDetector	create(AdaptableInterval newMaxCheck, double newThreshold, int newMaxIter, EventHandler newHandler)	Build a new instance.
double	g(SpacecraftState s)	Compute the value of the switching function.
double	getOccultingBodyRadius()	Getter for occulting body radius.

Methods inherited from class org.orekit.propagation.events.AbstractDetector

getHandler, getMaxCheckInterval, getMaxIterationCount, getThreshold, init, isForward, withHandler, withMaxCheck, withMaxCheck, withMaxIter, withThreshold

Methods inherited from class java.lang.Object

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

Constructor Detail

CylindricalShadowEclipseDetector

public CylindricalShadowEclipseDetector(PVCoordinatesProvider sun,
                                        double occultingBodyRadius,
                                        AdaptableInterval maxCheck,
                                        double threshold,
                                        int maxIter,
                                        EventHandler handler)

Constructor.

Parameters:

sun - light source provider (infinitely distant)

occultingBodyRadius - occulting body radius

maxCheck - maximum check for event detection

threshold - threshold for event detection

maxIter - maximum iteration for event detection

handler - event handler

CylindricalShadowEclipseDetector

public CylindricalShadowEclipseDetector(PVCoordinatesProvider sun,
                                        double occultingBodyRadius,
                                        EventHandler handler)

Constructor with default detection settings.

Parameters:

sun - light source provider

occultingBodyRadius - occulting body radius

handler - event handler

Method Detail

getOccultingBodyRadius

public double getOccultingBodyRadius()

Getter for occulting body radius.

Returns:

radius

g

public double g(SpacecraftState s)

Compute the value of the switching function. This function must be continuous (at least in its roots neighborhood), as the integrator will need to find its roots to locate the events.

Specified by:

g in interface EventDetector

Specified by:

g in class AbstractDetector<CylindricalShadowEclipseDetector>

Parameters:

s - the current state information: date, kinematics, attitude

Returns:

value of the switching function

create

protected CylindricalShadowEclipseDetector create(AdaptableInterval newMaxCheck,
                                                  double newThreshold,
                                                  int newMaxIter,
                                                  EventHandler newHandler)

Build a new instance.

Specified by:

create in class AbstractDetector<CylindricalShadowEclipseDetector>

Parameters:

newMaxCheck - maximum checking interval (s)

newThreshold - convergence threshold (s)

newMaxIter - maximum number of iterations in the event time search

newHandler - event handler to call at event occurrences

Returns:

a new instance of the appropriate sub-type