Package org.orekit.propagation.events

Class FieldCylindricalShadowEclipseDetector<T extends CalculusFieldElement<T>>

java.lang.Object

org.orekit.propagation.events.FieldAbstractDetector<FieldCylindricalShadowEclipseDetector<T>,T>

org.orekit.propagation.events.FieldCylindricalShadowEclipseDetector<T>

All Implemented Interfaces:

FieldEventDetector<T>

public class FieldCylindricalShadowEclipseDetector<T extends CalculusFieldElement<T>>
extends FieldAbstractDetector<FieldCylindricalShadowEclipseDetector<T>,T>

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:

FieldEclipseDetector, CylindricalShadowEclipseDetector

Field Summary

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

DEFAULT_MAX_ITER, DEFAULT_MAXCHECK, DEFAULT_THRESHOLD

Constructor Summary

Constructors

Constructor	Description
FieldCylindricalShadowEclipseDetector(ExtendedPositionProvider sun, T occultingBodyRadius, FieldAdaptableInterval<T> maxCheck, T threshold, int maxIter, FieldEventHandler<T> handler)	Constructor.
FieldCylindricalShadowEclipseDetector(ExtendedPositionProvider sun, T occultingBodyRadius, FieldEventHandler<T> handler)	Constructor with default detection settings.

Method Summary

Modifier and Type	Method	Description
protected FieldCylindricalShadowEclipseDetector<T>	create(FieldAdaptableInterval<T> newMaxCheck, T newThreshold, int newMaxIter, FieldEventHandler<T> newHandler)	Build a new instance.
T	g(FieldSpacecraftState<T> s)	Compute the value of the switching function.
T	getOccultingBodyRadius()	Getter for occulting body radius.

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

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

FieldCylindricalShadowEclipseDetector

public FieldCylindricalShadowEclipseDetector(ExtendedPositionProvider sun,
                                             T occultingBodyRadius,
                                             FieldAdaptableInterval<T> maxCheck,
                                             T threshold,
                                             int maxIter,
                                             FieldEventHandler<T> 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

FieldCylindricalShadowEclipseDetector

public FieldCylindricalShadowEclipseDetector(ExtendedPositionProvider sun,
                                             T occultingBodyRadius,
                                             FieldEventHandler<T> handler)

Constructor with default detection settings.

Parameters:

sun - light source provider

occultingBodyRadius - occulting body radius

handler - event handler

Method Detail

getOccultingBodyRadius

public T getOccultingBodyRadius()

Getter for occulting body radius.

Returns:

radius

g

public T g(FieldSpacecraftState<T> 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 FieldEventDetector<T extends CalculusFieldElement<T>>

Specified by:

g in class FieldAbstractDetector<FieldCylindricalShadowEclipseDetector<T extends CalculusFieldElement<T>>,T extends CalculusFieldElement<T>>

Parameters:

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

Returns:

value of the switching function

create

protected FieldCylindricalShadowEclipseDetector<T> create(FieldAdaptableInterval<T> newMaxCheck,
                                                          T newThreshold,
                                                          int newMaxIter,
                                                          FieldEventHandler<T> newHandler)

Build a new instance.

Specified by:

create in class FieldAbstractDetector<FieldCylindricalShadowEclipseDetector<T extends CalculusFieldElement<T>>,T extends CalculusFieldElement<T>>

Parameters:

newMaxCheck - maximum checking interval

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