Class FieldAltitudeDetector<T extends CalculusFieldElement<T>>
- java.lang.Object
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- org.orekit.propagation.events.FieldAbstractDetector<FieldAltitudeDetector<T>,T>
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- org.orekit.propagation.events.FieldAltitudeDetector<T>
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- Type Parameters:
T
- type of the field elements
- All Implemented Interfaces:
FieldEventDetector<T>
public class FieldAltitudeDetector<T extends CalculusFieldElement<T>> extends FieldAbstractDetector<FieldAltitudeDetector<T>,T>
Finder for satellite altitude crossing events.This class finds altitude events (i.e. satellite crossing a predefined altitude level above ground).
The default implementation behavior is to
continue
propagation when ascending and tostop
propagation when descending. This can be changed by callingFieldAbstractDetector.withHandler(FieldEventHandler)
after construction.- Since:
- 9.0
- Author:
- Luc Maisonobe
- See Also:
FieldPropagator.addEventDetector(FieldEventDetector)
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Field Summary
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Fields inherited from class org.orekit.propagation.events.FieldAbstractDetector
DEFAULT_MAX_ITER, DEFAULT_MAXCHECK, DEFAULT_THRESHOLD
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Constructor Summary
Constructors Modifier Constructor Description protected
FieldAltitudeDetector(FieldAdaptableInterval<T> maxCheck, T threshold, int maxIter, FieldEventHandler<T> handler, T altitude, BodyShape bodyShape)
Protected constructor with full parameters.FieldAltitudeDetector(T altitude, BodyShape bodyShape)
Build a new altitude detector.FieldAltitudeDetector(T maxCheck, T altitude, BodyShape bodyShape)
Build a new altitude detector.FieldAltitudeDetector(T maxCheck, T threshold, T altitude, BodyShape bodyShape)
Build a new altitude detector.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected FieldAltitudeDetector<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
getAltitude()
Get the threshold altitude value.BodyShape
getBodyShape()
Get the body shape.-
Methods inherited from class org.orekit.propagation.events.FieldAbstractDetector
create, getDetectionSettings, getHandler, getMaxCheckInterval, getMaxIterationCount, getThreshold, init, isForward, withDetectionSettings, withHandler, withMaxCheck, withMaxCheck, withMaxIter, withThreshold
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.orekit.propagation.events.FieldEventDetector
finish
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Constructor Detail
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FieldAltitudeDetector
public FieldAltitudeDetector(T altitude, BodyShape bodyShape)
Build a new altitude detector.This simple constructor takes default values for maximal checking interval (
FieldAbstractDetector.DEFAULT_MAXCHECK
) and convergence threshold (FieldAbstractDetector.DEFAULT_THRESHOLD
).- Parameters:
altitude
- threshold altitude valuebodyShape
- body shape with respect to which altitude should be evaluated
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FieldAltitudeDetector
public FieldAltitudeDetector(T maxCheck, T altitude, BodyShape bodyShape)
Build a new altitude detector.This simple constructor takes default value for convergence threshold (
FieldAbstractDetector.DEFAULT_THRESHOLD
).The maximal interval between altitude checks should be smaller than the half duration of the minimal pass to handle, otherwise some short passes could be missed.
- Parameters:
maxCheck
- maximal checking interval (s)altitude
- threshold altitude value (m)bodyShape
- body shape with respect to which altitude should be evaluated
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FieldAltitudeDetector
public FieldAltitudeDetector(T maxCheck, T threshold, T altitude, BodyShape bodyShape)
Build a new altitude detector.The maximal interval between altitude checks should be smaller than the half duration of the minimal pass to handle, otherwise some short passes could be missed.
The maximal interval between altitude checks should be smaller than the half duration of the minimal pass to handle, otherwise some short passes could be missed.
- Parameters:
maxCheck
- maximal checking interval (s)threshold
- convergence threshold (s)altitude
- threshold altitude value (m)bodyShape
- body shape with respect to which altitude should be evaluated
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FieldAltitudeDetector
protected FieldAltitudeDetector(FieldAdaptableInterval<T> maxCheck, T threshold, int maxIter, FieldEventHandler<T> handler, T altitude, BodyShape bodyShape)
Protected constructor with full parameters.This constructor is not public as users are expected to use the builder API with the various
withXxx()
methods to set up the instance in a readable manner without using a huge amount of parameters.- Parameters:
maxCheck
- maximum checking intervalthreshold
- convergence threshold (s)maxIter
- maximum number of iterations in the event time searchhandler
- event handler to call at event occurrencesaltitude
- threshold altitude value (m)bodyShape
- body shape with respect to which altitude should be evaluated- Since:
- 6.1
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Method Detail
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create
protected FieldAltitudeDetector<T> create(FieldAdaptableInterval<T> newMaxCheck, T newThreshold, int newMaxIter, FieldEventHandler<T> newHandler)
Build a new instance.- Specified by:
create
in classFieldAbstractDetector<FieldAltitudeDetector<T extends CalculusFieldElement<T>>,T extends CalculusFieldElement<T>>
- Parameters:
newMaxCheck
- maximum checking intervalnewThreshold
- convergence threshold (s)newMaxIter
- maximum number of iterations in the event time searchnewHandler
- event handler to call at event occurrences- Returns:
- a new instance of the appropriate sub-type
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getAltitude
public T getAltitude()
Get the threshold altitude value.- Returns:
- the threshold altitude value (m)
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getBodyShape
public BodyShape getBodyShape()
Get the body shape.- Returns:
- the body shape
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g
public T g(FieldSpacecraftState<T> s)
Compute the value of the switching function. This function measures the difference between the current altitude and the threshold altitude.- Parameters:
s
- the current state information: date, kinematics, attitude- Returns:
- value of the switching function
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