agi.foundation.radar

(agi.foundation.radar-2024r2.jar)

Class MitchellWalkerProbabilityOfDetectionScalar

java.lang.Object

agi.foundation.infrastructure.DefinitionalObject

agi.foundation.geometry.Scalar

agi.foundation.radar.SingleTargetRadarLinkScalar

agi.foundation.radar.MitchellWalkerProbabilityOfDetectionScalar

All Implemented Interfaces:

ICloneWithContext, IEnumerateDependencies, IEquatableDefinition, IFreezable

public class MitchellWalkerProbabilityOfDetectionScalar
extends SingleTargetRadarLinkScalar

A SingleTargetRadarLinkScalar which represents the Mitchell-Walker probability of detection model. The probability of detection (PDet) is a function of the signal-to-noise ratio (single pulse or integrated, with or without interference effects), the number of pulses integrated, the probability of false alarm, and the radar cross section (RCS) fluctuation type (SwerlingTargetModel). If enabled, the probability of detection for a constant false alarm rate (CFAR) can be evaluated based on the number of reference cells. A CFAR receiver will adjust the detection threshold based on the noise in reference 'cells' around the cell being examined for the presence of a target.

The algorithm for computing probability of detection comes from Mitchell, R.L. and J.F. Walker, "Recursive Methods for Computing Detection Probabilities," IEEE Transactions on Aerospace Electronic Systems, Vol. 7, No. 4 (July 1971). The SwerlingTargetModel is not directly configured on the scalar instance, but is obtained from the received radar signal. The scalar will look for an instance of PointScattererInformationCollection using the Signal.getDataByType(agi.foundation.TypeLiteral<T>) method on the received signal. The scalar will then try to obtain an instance of SignalSwerlingTargetModel from the last PointScattererInformation instance in the collection. If an instance of the SignalSwerlingTargetModel is found, the SwerlingTargetModel is obtained from SwerlingTargetModel (get), otherwise SwerlingTargetModel.NONE is used, indicating a non-fluctuating radar cross section.

Constructor Summary

Constructors

Constructor and Description
MitchellWalkerProbabilityOfDetectionScalar(IServiceProvider radarTransmitter, IServiceProvider target, IServiceProvider radarReceiver, IntendedSignalStrategy intendedSignalStrategy, SignalPropagationGraph graph) Initializes a new instance.
MitchellWalkerProbabilityOfDetectionScalar(IServiceProvider radarTransmitter, IServiceProvider target, IServiceProvider radarReceiver, IntendedSignalStrategy intendedSignalStrategy, SignalPropagationGraph graph, boolean evaluateInterference) Initializes a new instance.
MitchellWalkerProbabilityOfDetectionScalar(IServiceProvider radarTransmitter, IServiceProvider target, IServiceProvider radarReceiver, IntendedSignalStrategy intendedSignalStrategy, SignalPropagationGraph graph, boolean evaluateInterference, double probabilityOfFalseAlarm, boolean enableConstantFalseAlarmRate, int constantFalseAlarmRateReferenceCellCount, SignalToNoiseRatioComputeMode computeMode) Initializes a new instance.
MitchellWalkerProbabilityOfDetectionScalar(IServiceProvider radarTransmitter, IServiceProvider target, IServiceProvider radarReceiver, IntendedSignalStrategy intendedSignalStrategy, SignalPropagationGraph graph, boolean evaluateInterference, double probabilityOfFalseAlarm, SignalToNoiseRatioComputeMode computeMode) Initializes a new instance.
MitchellWalkerProbabilityOfDetectionScalar(IServiceProvider radarTransmitter, IServiceProvider target, IServiceProvider radarReceiver, IntendedSignalStrategy intendedSignalStrategy, SignalPropagationGraph graph, boolean evaluateInterference, SignalToNoiseRatioComputeMode computeMode) Initializes a new instance.
MitchellWalkerProbabilityOfDetectionScalar(IServiceProvider radarTransmitter, IServiceProvider target, IServiceProvider radarReceiver, IntendedSignalStrategy intendedSignalStrategy, SignalPropagationGraph graph, double probabilityOfFalseAlarm, SignalToNoiseRatioComputeMode computeMode) Initializes a new instance.
MitchellWalkerProbabilityOfDetectionScalar(IServiceProvider radarTransmitter, IServiceProvider target, IServiceProvider radarReceiver, IntendedSignalStrategy intendedSignalStrategy, SignalPropagationGraph graph, SignalToNoiseRatioComputeMode computeMode) Initializes a new instance.
MitchellWalkerProbabilityOfDetectionScalar(MitchellWalkerProbabilityOfDetectionScalar existingInstance, CopyContext context) Initializes a new instance as a copy of an existing instance.

Method Summary

Modifier and Type	Method and Description
protected boolean	checkForSameDefinition(MitchellWalkerProbabilityOfDetectionScalar other) Checks to determine if another instance has the same definition as this instance and returns true if it does.
protected boolean	checkForSameDefinition(SingleTargetRadarLinkScalar other) Checks to determine if another instance has the same definition as this instance and returns true if it does.
Object	clone(CopyContext context) Clones this object using the specified context.
protected int	computeCurrentDefinitionHashCode() Computes a hash code based on the current properties of this object.
SignalToNoiseRatioComputeMode	getComputeMode() Gets the mode used for computing the signal-to-noise ratio.
int	getConstantFalseAlarmRateReferenceCellCount() Gets the number of constant false alarm rate reference cells.
boolean	getEnableConstantFalseAlarmRate() Gets a value indicating whether or not to use a constant false alarm rate.
ScalarEvaluator	getEvaluator(EvaluatorGroup group) Gets an evaluator to compute the probability of detection of the received waveform using the Mitchell-Walker algorithm.
double	getProbabilityOfFalseAlarm() Gets the probability of false alarm used in order to determined the detection threshold.
void	setComputeMode(SignalToNoiseRatioComputeMode value) Sets the mode used for computing the signal-to-noise ratio.
void	setConstantFalseAlarmRateReferenceCellCount(int value) Sets the number of constant false alarm rate reference cells.
void	setEnableConstantFalseAlarmRate(boolean value) Sets a value indicating whether or not to use a constant false alarm rate.
void	setProbabilityOfFalseAlarm(double value) Sets the probability of false alarm used in order to determined the detection threshold.
protected void	validateProperties() Validates all properties for use in constructing the signal evaluator.

Methods inherited from class agi.foundation.radar.SingleTargetRadarLinkScalar

checkForSameDefinition, enumerateDependencies, freezeAggregatedObjects, getEvaluateInterference, getIntendedSignalStrategy, getRadarReceiver, getRadarTransmitter, getSignalPropagationGraph, getTarget, getUseLogarithmicSampling, setUseLogarithmicSampling

Methods inherited from class agi.foundation.geometry.Scalar

add, add, add, add, add, checkForSameDefinition, createScalarDerivative, divide, divide, divide, divide, divide, getEvaluator, multiply, multiply, multiply, multiply, multiply, power, subtract, subtract, subtract, subtract, subtract, toScalar

Methods inherited from class agi.foundation.infrastructure.DefinitionalObject

areSameDefinition, areSameDefinition, areSameDefinition, areSameDefinition, areSameDefinition, collectionItemsAreSameDefinition, collectionItemsAreSameDefinition, collectionItemsAreSameDefinition, dictionaryItemsAreSameDefinition, freeze, getCollectionHashCode, getCollectionHashCode, getCollectionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDefinitionHashCode, getDictionaryHashCode, getIsFrozen, isSameDefinition, throwIfFrozen

Methods inherited from class java.lang.Object

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

Constructor Detail

MitchellWalkerProbabilityOfDetectionScalar

public MitchellWalkerProbabilityOfDetectionScalar(IServiceProvider radarTransmitter,
                                                  IServiceProvider target,
                                                  IServiceProvider radarReceiver,
                                                  IntendedSignalStrategy intendedSignalStrategy,
                                                  SignalPropagationGraph graph)

Initializes a new instance.

• The ComputeMode (get / set) property defaults to the value SignalToNoiseRatioComputeMode.SINGLE_PULSE.
• The EvaluateInterference (get) property is defaulted to false.
• The ProbabilityOfFalseAlarm (get / set) property defaults to the value Constants.Epsilon6.
• The EnableConstantFalseAlarmRate (get / set) property defaults to false.
• The ConstantFalseAlarmRateReferenceCellCount (get / set) property defaults to 1.

Parameters:

radarTransmitter - An IServiceProvider which represents the radar transmitter.

target - An IServiceProvider which represents the radar target. A valid target instance must provide the IPointScattererService service.

radarReceiver - An IServiceProvider which represents the radar receiver.

graph - The graph of communication and radar links used to propagate signals.

intendedSignalStrategy - The method used to identify the desired signal for scalar evaluation.

MitchellWalkerProbabilityOfDetectionScalar

public MitchellWalkerProbabilityOfDetectionScalar(IServiceProvider radarTransmitter,
                                                  IServiceProvider target,
                                                  IServiceProvider radarReceiver,
                                                  IntendedSignalStrategy intendedSignalStrategy,
                                                  SignalPropagationGraph graph,
                                                  boolean evaluateInterference)

Initializes a new instance.

• The ComputeMode (get / set) property defaults to the value SignalToNoiseRatioComputeMode.SINGLE_PULSE.
• The ProbabilityOfFalseAlarm (get / set) property defaults to the value Constants.Epsilon6.
• The EnableConstantFalseAlarmRate (get / set) property defaults to false.
• The ConstantFalseAlarmRateReferenceCellCount (get / set) property defaults to 1.

Parameters:

radarTransmitter - An IServiceProvider which represents the radar transmitter.

target - An IServiceProvider which represents the radar target. A valid target instance must provide the IPointScattererService service.

radarReceiver - An IServiceProvider which represents the radar receiver.

graph - The graph of communication and radar links used to propagate signals.

intendedSignalStrategy - The method used to identify the desired signal for scalar evaluation.

evaluateInterference - Indicates whether or not the scalar should account for interference sources in the scalar evaluation. If false, no interference will be evaluated, even if present in the SignalPropagationGraph (get).

MitchellWalkerProbabilityOfDetectionScalar

public MitchellWalkerProbabilityOfDetectionScalar(IServiceProvider radarTransmitter,
                                                  IServiceProvider target,
                                                  IServiceProvider radarReceiver,
                                                  IntendedSignalStrategy intendedSignalStrategy,
                                                  SignalPropagationGraph graph,
                                                  @Nonnull
                                                  SignalToNoiseRatioComputeMode computeMode)

Initializes a new instance.

• The EvaluateInterference (get) property is defaulted to false.
• The ProbabilityOfFalseAlarm (get / set) property defaults to the value Constants.Epsilon6.
• The EnableConstantFalseAlarmRate (get / set) property defaults to false.
• The ConstantFalseAlarmRateReferenceCellCount (get / set) property defaults to 1.

Parameters:

radarTransmitter - An IServiceProvider which represents the radar transmitter.

target - An IServiceProvider which represents the radar target. A valid target instance must provide the IPointScattererService service.

radarReceiver - An IServiceProvider which represents the radar receiver.

graph - The graph of communication and radar links used to propagate signals.

intendedSignalStrategy - The method used to identify the desired signal for scalar evaluation.

computeMode - Mode for computing the signal-to-noise ratio used to determine the probability of detection.

MitchellWalkerProbabilityOfDetectionScalar

public MitchellWalkerProbabilityOfDetectionScalar(IServiceProvider radarTransmitter,
                                                  IServiceProvider target,
                                                  IServiceProvider radarReceiver,
                                                  IntendedSignalStrategy intendedSignalStrategy,
                                                  SignalPropagationGraph graph,
                                                  boolean evaluateInterference,
                                                  @Nonnull
                                                  SignalToNoiseRatioComputeMode computeMode)

Initializes a new instance.

• The ProbabilityOfFalseAlarm (get / set) property defaults to the value Constants.Epsilon6.
• The EnableConstantFalseAlarmRate (get / set) property defaults to false.
• The ConstantFalseAlarmRateReferenceCellCount (get / set) property defaults to 1.

Parameters:

radarTransmitter - An IServiceProvider which represents the radar transmitter.

target - An IServiceProvider which represents the radar target. A valid target instance must provide the IPointScattererService service.

radarReceiver - An IServiceProvider which represents the radar receiver.

graph - The graph of communication and radar links used to propagate signals.

intendedSignalStrategy - The method used to identify the desired signal for scalar evaluation.

evaluateInterference - Indicates whether or not the scalar should account for interference sources in the scalar evaluation. If false, no interference will be evaluated, even if present in the SignalPropagationGraph (get).

computeMode - Mode for computing the signal-to-noise ratio used to determine the probability of detection.

MitchellWalkerProbabilityOfDetectionScalar

public MitchellWalkerProbabilityOfDetectionScalar(IServiceProvider radarTransmitter,
                                                  IServiceProvider target,
                                                  IServiceProvider radarReceiver,
                                                  IntendedSignalStrategy intendedSignalStrategy,
                                                  SignalPropagationGraph graph,
                                                  double probabilityOfFalseAlarm,
                                                  @Nonnull
                                                  SignalToNoiseRatioComputeMode computeMode)

Initializes a new instance.

• The EvaluateInterference (get) property is defaulted to false.
• The EnableConstantFalseAlarmRate (get / set) property defaults to false.
• The ConstantFalseAlarmRateReferenceCellCount (get / set) property defaults to 1.

Parameters:

radarTransmitter - An IServiceProvider which represents the radar transmitter.

target - An IServiceProvider which represents the radar target. A valid target instance must provide the IPointScattererService service.

radarReceiver - An IServiceProvider which represents the radar receiver.

graph - The graph of communication and radar links used to propagate signals.

intendedSignalStrategy - The method used to identify the desired signal for scalar evaluation.

probabilityOfFalseAlarm - The probability of false alarm used to determine the detection threshold.

computeMode - Mode for computing the signal-to-noise ratio used to determine the probability of detection.

MitchellWalkerProbabilityOfDetectionScalar

public MitchellWalkerProbabilityOfDetectionScalar(IServiceProvider radarTransmitter,
                                                  IServiceProvider target,
                                                  IServiceProvider radarReceiver,
                                                  IntendedSignalStrategy intendedSignalStrategy,
                                                  SignalPropagationGraph graph,
                                                  boolean evaluateInterference,
                                                  double probabilityOfFalseAlarm,
                                                  @Nonnull
                                                  SignalToNoiseRatioComputeMode computeMode)

Initializes a new instance.

• The EnableConstantFalseAlarmRate (get / set) property defaults to false.
• The ConstantFalseAlarmRateReferenceCellCount (get / set) property defaults to 1.

Parameters:

radarTransmitter - An IServiceProvider which represents the radar transmitter.

target - An IServiceProvider which represents the radar target. A valid target instance must provide the IPointScattererService service.

radarReceiver - An IServiceProvider which represents the radar receiver.

graph - The graph of communication and radar links used to propagate signals.

intendedSignalStrategy - The method used to identify the desired signal for scalar evaluation.

evaluateInterference - Indicates whether or not the scalar should account for interference sources in the scalar evaluation. If false, no interference will be evaluated, even if present in the SignalPropagationGraph (get).

probabilityOfFalseAlarm - The probability of false alarm used to determine the detection threshold.

computeMode - Mode for computing the signal-to-noise ratio used to determine the probability of detection.

MitchellWalkerProbabilityOfDetectionScalar

public MitchellWalkerProbabilityOfDetectionScalar(IServiceProvider radarTransmitter,
                                                  IServiceProvider target,
                                                  IServiceProvider radarReceiver,
                                                  IntendedSignalStrategy intendedSignalStrategy,
                                                  SignalPropagationGraph graph,
                                                  boolean evaluateInterference,
                                                  double probabilityOfFalseAlarm,
                                                  boolean enableConstantFalseAlarmRate,
                                                  int constantFalseAlarmRateReferenceCellCount,
                                                  @Nonnull
                                                  SignalToNoiseRatioComputeMode computeMode)

Initializes a new instance.

Parameters:

radarTransmitter - An IServiceProvider which represents the radar transmitter.

target - An IServiceProvider which represents the radar target. A valid target instance must provide the IPointScattererService service.

radarReceiver - An IServiceProvider which represents the radar receiver.

graph - The graph of communication and radar links used to propagate signals.

intendedSignalStrategy - The method used to identify the desired signal for scalar evaluation.

evaluateInterference - Indicates whether or not the scalar should account for interference sources in the scalar evaluation. If false, no interference will be evaluated, even if present in the SignalPropagationGraph (get).

probabilityOfFalseAlarm - The probability of false alarm used to determine the detection threshold.

computeMode - Mode for computing the signal-to-noise ratio used to determine the probability of detection.

enableConstantFalseAlarmRate - Enables or disables a constant false alarm rate.

constantFalseAlarmRateReferenceCellCount - The number of constant false alarm rate reference cells.

MitchellWalkerProbabilityOfDetectionScalar

public MitchellWalkerProbabilityOfDetectionScalar(@Nonnull
                                                  MitchellWalkerProbabilityOfDetectionScalar existingInstance,
                                                  @Nonnull
                                                  CopyContext context)

Initializes a new instance as a copy of an existing instance.

See ICloneWithContext.clone(CopyContext) for more information about how to implement this constructor in a derived class.

Parameters:

existingInstance - The existing instance to copy.

context - A CopyContext that controls the depth of the copy.

Throws:

ArgumentNullException - Thrown when existingInstance or context is null.

Method Detail

clone

public Object clone(CopyContext context)

Clones this object using the specified context.

This method should be implemented to call a copy constructor on the class of the object being cloned. The copy constructor should take the CopyContext as a parameter in addition to the existing instance to copy. The copy constructor should first call CopyContext.addObjectMapping(T, T) to identify the newly constructed instance as a copy of the existing instance. It should then copy all fields, using CopyContext.updateReference(T) to copy any reference fields.

A typical implementation of ICloneWithContext:

public static class MyClass implements ICloneWithContext {
    public MyClass(MyClass existingInstance, CopyContext context) {
        context.addObjectMapping(existingInstance, this);
        someReference = context.updateReference(existingInstance.someReference);
    }

    @Override
    public final Object clone(CopyContext context) {
        return new MyClass(this, context);
    }

    private Object someReference;
}

In general, all fields that are reference types should be copied with a call to CopyContext.updateReference(T). There are a couple of exceptions:

1. Fields that are aggregate parts of the object should always be copied. A referenced object is an aggregate if properties or methods on the object being copied can modify the externally-visible value of the referenced object.
2. If the semantics of the referenced object require that it have a single parent, owner, context, etc., and the object being copied is that parent, owner, or context, then the referenced object should always be copied.

If one of these exceptions applies, the CopyContext should be given an opportunity to update the reference before the reference is copied explicitly. Use CopyContext.updateReference(T) to update the reference. If CopyContext.updateReference(T) returns the original object, indicating that the context does not have a replacement registered, then copy the object manually by invoking a Clone method, a copy constructor, or by manually constructing a new instance and copying the values.

alwaysCopy = context.updateReference(existingInstance.alwaysCopy);
if (existingInstance.alwaysCopy != null && alwaysCopy == existingInstance.alwaysCopy) {
    alwaysCopy = (AlwaysCopy) existingInstance.alwaysCopy.clone(context);
}

If you are implementing an evaluator (a class that implements IEvaluator), the IEvaluator.updateEvaluatorReferences(agi.foundation.infrastructure.CopyContext) method shares some responsibilities with the copy context constructor. Code duplication can be avoided by doing the following:

1. For references to other evaluators ONLY, simply assign the reference in the constructor instead of calling CopyContext.updateReference(T). You should still call CopyContext.updateReference(T) on any references to non-evaluators.
2. Call IEvaluator.updateEvaluatorReferences(agi.foundation.infrastructure.CopyContext) as the last line in the constructor and pass it the same CopyContext passed to the constructor.
3. Implement IEvaluator.updateEvaluatorReferences(agi.foundation.infrastructure.CopyContext) as normal. See the reference documentation for IEvaluator.updateEvaluatorReferences(agi.foundation.infrastructure.CopyContext) for more information on implementing that method.

public MyClass(MyClass existingInstance, CopyContext context) {
    super(existingInstance, context);
    someReference = context.updateReference(existingInstance.someReference);
    evaluatorReference = existingInstance.evaluatorReference;
    updateEvaluatorReferences(context);
}

@Override
public void updateEvaluatorReferences(CopyContext context) {
    evaluatorReference = context.updateReference(evaluatorReference);
}

@Override
public Object clone(CopyContext context) {
    return new MyClass(this, context);
}

private Object someReference;
private IEvaluator evaluatorReference;

Specified by:

clone in interface ICloneWithContext

Specified by:

clone in class DefinitionalObject

Parameters:

context - The context to use to perform the copy.

Returns:

A new instance which is a copy of this object.

checkForSameDefinition

protected final boolean checkForSameDefinition(SingleTargetRadarLinkScalar other)

Checks to determine if another instance has the same definition as this instance and returns true if it does. Derived classes MUST override this method and check all new fields introduced by the derived class for definitional equivalence. It is NOT necessary to check base class fields because the base class will already have done that. When overriding this method, you should NOT call the base implementation because it will return false for all derived-class instances. Derived classes should check the type of other to preserve the symmetric nature of IEquatableDefinition.isSameDefinition(java.lang.Object).

Specified by:

checkForSameDefinition in class SingleTargetRadarLinkScalar

Parameters:

other - The other instance to compare to this one.

Returns:

true if the two objects are defined equivalently; otherwise false.

checkForSameDefinition

protected boolean checkForSameDefinition(MitchellWalkerProbabilityOfDetectionScalar other)

Checks to determine if another instance has the same definition as this instance and returns true if it does. Derived classes MUST override this method and check all new fields introduced by the derived class for definitional equivalence. It is NOT necessary to check base class fields because the base class will already have done that. When overriding this method, you should NOT call the base implementation because it will return false for all derived-class instances. Derived classes should check the type of other to preserve the symmetric nature of IEquatableDefinition.isSameDefinition(java.lang.Object).

Parameters:

other - The other instance to compare to this one.

Returns:

true if the two objects are defined equivalently; otherwise false.

computeCurrentDefinitionHashCode

protected int computeCurrentDefinitionHashCode()

Computes a hash code based on the current properties of this object. Derived classes MUST override this method and compute a hash code that combines: a unique hash code seed, the base implementation result, and the hash codes of all new fields introduced by the derived class which are used in the MitchellWalkerProbabilityOfDetectionScalar.checkForSameDefinition(agi.foundation.radar.SingleTargetRadarLinkScalar) method.

Overrides:

computeCurrentDefinitionHashCode in class SingleTargetRadarLinkScalar

Returns:

The computed hash code.

getProbabilityOfFalseAlarm

public final double getProbabilityOfFalseAlarm()

Gets the probability of false alarm used in order to determined the detection threshold.

setProbabilityOfFalseAlarm

public final void setProbabilityOfFalseAlarm(double value)

Sets the probability of false alarm used in order to determined the detection threshold.

getComputeMode

@Nonnull
public final SignalToNoiseRatioComputeMode getComputeMode()

Gets the mode used for computing the signal-to-noise ratio.

setComputeMode

public final void setComputeMode(@Nonnull
                                 SignalToNoiseRatioComputeMode value)

Sets the mode used for computing the signal-to-noise ratio.

getEnableConstantFalseAlarmRate

public final boolean getEnableConstantFalseAlarmRate()

Gets a value indicating whether or not to use a constant false alarm rate.

setEnableConstantFalseAlarmRate

public final void setEnableConstantFalseAlarmRate(boolean value)

Sets a value indicating whether or not to use a constant false alarm rate.

getConstantFalseAlarmRateReferenceCellCount

public final int getConstantFalseAlarmRateReferenceCellCount()

Gets the number of constant false alarm rate reference cells.

setConstantFalseAlarmRateReferenceCellCount

public final void setConstantFalseAlarmRateReferenceCellCount(int value)

Sets the number of constant false alarm rate reference cells.

validateProperties

protected void validateProperties()

Validates all properties for use in constructing the signal evaluator.

Overrides:

validateProperties in class SingleTargetRadarLinkScalar

getEvaluator

public ScalarEvaluator getEvaluator(EvaluatorGroup group)

Gets an evaluator to compute the probability of detection of the received waveform using the Mitchell-Walker algorithm. The probability of detection (PDet) is a function of the signal-to-noise ratio (single pulse or integrated, with or without interference effects), the number of pulses integrated, the probability of false alarm, and the radar cross section (RCS) fluctuation type (SwerlingTargetModel).

The ScalarEvaluator returned from this method assumes that the evaluation time is equivalent to the time of signal transmission.

Specified by:

getEvaluator in class Scalar

Parameters:

group - The evaluator group in which to create evaluators.

Returns:

An evaluator which computes the probability of detection for the received waveform.

Throws:

PropertyInvalidException - Thrown if any of the properties are null, if the ProbabilityOfFalseAlarm (get / set) value is less than Constants.Epsilon11 or greater than 1, or if EnableConstantFalseAlarmRate (get / set) is true and ConstantFalseAlarmRateReferenceCellCount (get / set) is less than 1.

IllegalStateException - Thrown if the RadarTransmitter (get), Target (get), and RadarReceiver (get) instances do not form a valid link path in the SignalPropagationGraph (get) instance.

ServiceNotAvailableException - Thrown if the RadarReceiver (get) does not provide the IProcessedRadarWaveformOutputService. The IProcessedRadarWaveformOutputService will be missing if the ProcessedRadarWaveformOutputExtension was not added to the radar receiver Platform instance.

IllegalStateException - Thrown if the ProcessedRadarWaveformOutput property of the IProcessedRadarWaveformOutputService service interface returns null. This can happen if the ProcessedRadarWaveformOutputExtension of the radar receiver was configured with a null RadarWaveformProcessor.

ArgumentNullException - Thrown if the group argument is null.