agi.foundation.communications.antennas

(agi.foundation.communications-2025r1.jar)

Class PhasedArrayBeamformer

java.lang.Object

agi.foundation.infrastructure.DefinitionalObject

agi.foundation.communications.antennas.PhasedArrayBeamformer

All Implemented Interfaces:

ICloneWithContext, IEnumerateDependencies, IEquatableDefinition, IFreezable

Direct Known Subclasses:

MinimumVarianceDistortionlessResponseBeamformer

public abstract class PhasedArrayBeamformer
extends DefinitionalObject

Abstract base class for a phased array beamformer which is responsible for computing the complex element weights.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	PhasedArrayBeamformer() Initializes a new instance.
protected	PhasedArrayBeamformer(PhasedArrayBeamformer 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(DefinitionalObject other) Checks to determine if another instance has the same definition as this instance and returns true if it does.
protected abstract boolean	checkForSameDefinition(PhasedArrayBeamformer other) Checks to determine if another instance has the same definition as this instance and returns true if it does.
protected int	computeCurrentDefinitionHashCode() Computes a hash code based on the current properties of this object.
abstract BeamformerWeightsEvaluator	getBeamWeightsEvaluator(EvaluatorGroup group, ISignalSource inputSignal, Vector linkDirection, Axes antennaAxes, List<PhasedArrayElement> elementPattern) Gets a BeamformerWeightsEvaluator which when evaluated produces a ComplexMatrix of element weights.

Methods inherited from class agi.foundation.infrastructure.DefinitionalObject

areSameDefinition, areSameDefinition, areSameDefinition, areSameDefinition, areSameDefinition, clone, collectionItemsAreSameDefinition, collectionItemsAreSameDefinition, collectionItemsAreSameDefinition, dictionaryItemsAreSameDefinition, enumerateDependencies, freeze, freezeAggregatedObjects, 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

PhasedArrayBeamformer

protected PhasedArrayBeamformer()

Initializes a new instance.

PhasedArrayBeamformer

protected PhasedArrayBeamformer(@Nonnull
                                PhasedArrayBeamformer 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

checkForSameDefinition

protected final boolean checkForSameDefinition(DefinitionalObject 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 DefinitionalObject

Parameters:

other - The other instance to compare to this one.

Returns:

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

checkForSameDefinition

protected abstract boolean checkForSameDefinition(PhasedArrayBeamformer 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 PhasedArrayBeamformer.checkForSameDefinition(agi.foundation.infrastructure.DefinitionalObject) method.

Overrides:

computeCurrentDefinitionHashCode in class DefinitionalObject

Returns:

The computed hash code.

getBeamWeightsEvaluator

@Nonnull
public abstract BeamformerWeightsEvaluator getBeamWeightsEvaluator(@Nonnull
                                                                             EvaluatorGroup group,
                                                                             @Nonnull
                                                                             ISignalSource inputSignal,
                                                                             @Nonnull
                                                                             Vector linkDirection,
                                                                             @Nonnull
                                                                             Axes antennaAxes,
                                                                             @Nonnull
                                                                             List<PhasedArrayElement> elementPattern)

Gets a BeamformerWeightsEvaluator which when evaluated produces a ComplexMatrix of element weights.

Parameters:

group - The group with which to associate the new evaluator. By grouping evaluators that are often evaluated at the same Julian dates, common computations can be performed only once for the entire group instead of multiple times for each evaluator.

inputSignal - The input signal source.

linkDirection - The link direction vector.

antennaAxes - The antenna axes.

elementPattern - The phased array element pattern.

Returns:

An BeamformerWeightsEvaluator instance for evaluating element weights.