agi.foundation.communications

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

Class SimpleAnalogTransmitter

java.lang.Object

agi.foundation.infrastructure.DefinitionalObject

agi.foundation.infrastructure.ExtensibleObject

agi.foundation.platforms.Platform

agi.foundation.communications.SimpleAnalogTransmitter

All Implemented Interfaces:

IIdentifiableTransmitterService, IKinematicStateService, ILocationPointService, IOrientationAxesService, ISetOrientationAxesService, ICloneWithContext, IEnumerateDependencies, IEquatableDefinition, IFreezable, INameService, IParentService, IServiceProvider

public class SimpleAnalogTransmitter
extends Platform
implements IIdentifiableTransmitterService

A simple analog transmitter defined by frequency and power.

Constructor Summary

Constructors

Modifier	Constructor and Description
	SimpleAnalogTransmitter() Creates a new instance using default values.
protected	SimpleAnalogTransmitter(SimpleAnalogTransmitter existingInstance, CopyContext context) Initializes a new instance as a copy of an existing instance.
	SimpleAnalogTransmitter(String name, Point location, Axes orientationAxes, double carrierFrequency, double effectiveIsotropicRadiatedPower, double bandwidth) Creates a new instance, specifying all parameters.
	SimpleAnalogTransmitter(String name, Point location, Axes orientationAxes, double carrierFrequency, double effectiveIsotropicRadiatedPower, double bandwidth, PolarizationSource polarizationSource) Creates a new instance, specifying all parameters.
	SimpleAnalogTransmitter(String name, Point locationPoint, double carrierFrequency, double effectiveIsotropicRadiatedPower, double bandwidth) Creates a new instance with the specified parameters.

Method Summary

Modifier and Type	Method and Description
protected boolean	checkForSameDefinition(Platform other) Checks to determine if another instance has the same definition as this instance and returns true if it does.
protected boolean	checkForSameDefinition(SimpleAnalogTransmitter 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.
void	enumerateDependencies(DependencyEnumerator enumerator) Enumerates the dependencies of this object by calling DependencyEnumerator#enumerate(T) for each object that this object directly depends upon.
double	getBandwidth() Gets the bandwidth of the signal, in hertz.
double	getCarrierFrequency() Gets the frequency of the signal, in hertz.
double	getEffectiveIsotropicRadiatedPower() Gets the Effective Isotropic Radiated Power (EIRP) in Watts.
TimeIntervalCollection	getGenerationTimes() Gets a collection of the time intervals when the transmitter is broadcasting.
SignalIdentifier	getIdentifier() Gets the identifier for this transmitter's signals.
PolarizationSource	getPolarizationSource() Gets the polarization source for modeling polarization efficiency.
void	setBandwidth(double value) Sets the bandwidth of the signal, in hertz.
void	setCarrierFrequency(double value) Sets the frequency of the signal, in hertz.
void	setEffectiveIsotropicRadiatedPower(double value) Sets the Effective Isotropic Radiated Power (EIRP) in Watts.
void	setIdentifier(SignalIdentifier value) Sets the identifier for this transmitter's signals.
void	setPolarizationSource(PolarizationSource value) Sets the polarization source for modeling polarization efficiency.
ComplexAnalogTransmitter	toComplexAnalogTransmitter() Converts this analog transmitter to an equivalent ComplexAnalogTransmitter.

Methods inherited from class agi.foundation.platforms.Platform

checkForSameDefinition, freezeAggregatedObjects, getChildren, getLocationPoint, getName, getOrientationAxes, getParent, getReferenceFrame, getService, setLocationPoint, setName, setOrientationAxes

Methods inherited from class agi.foundation.infrastructure.ExtensibleObject

checkForSameDefinition, getExtensions

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

SimpleAnalogTransmitter

public SimpleAnalogTransmitter()

Creates a new instance using default values.

The default values are as follows:

Property	Default Value
CarrierFrequency (get / set)	14.5 GHz
EffectiveIsotropicRadiatedPower (get / set)	1000 Watts
Bandwidth (get / set)	32.0 MHz

SimpleAnalogTransmitter

public SimpleAnalogTransmitter(String name,
                               Point locationPoint,
                               double carrierFrequency,
                               double effectiveIsotropicRadiatedPower,
                               double bandwidth)

Creates a new instance with the specified parameters.

Parameters:

name - The name of the transmitter.

locationPoint - The Point defining the location of the receiver over time.

carrierFrequency - The frequency, in hertz, that this transmitter broadcasts on.

effectiveIsotropicRadiatedPower - The power, in watts, that this transmitter broadcasts isotropically.

bandwidth - The bandwidth of the signal, in hertz.

SimpleAnalogTransmitter

public SimpleAnalogTransmitter(String name,
                               Point location,
                               Axes orientationAxes,
                               double carrierFrequency,
                               double effectiveIsotropicRadiatedPower,
                               double bandwidth)

Creates a new instance, specifying all parameters.

Because the SimpleAnalogTransmitter uses an IsotropicGainPattern, the orientation of this transmitter does not affect the communications analysis. The orientationAxes parameter in this constructor is made available to allow configuration for other analysis that may require it to be set.

Parameters:

name - The name of the transmitter.

location - The Point defining the location of the receiver over time.

orientationAxes - The Axes defining the orientation of the receiver over time.

carrierFrequency - The frequency, in hertz, that this transmitter broadcasts on.

effectiveIsotropicRadiatedPower - The power, in watts, that this transmitter broadcasts isotropically

bandwidth - The bandwidth of the signal, in hertz.

SimpleAnalogTransmitter

public SimpleAnalogTransmitter(String name,
                               Point location,
                               Axes orientationAxes,
                               double carrierFrequency,
                               double effectiveIsotropicRadiatedPower,
                               double bandwidth,
                               PolarizationSource polarizationSource)

Creates a new instance, specifying all parameters.

Because the SimpleAnalogTransmitter uses an IsotropicGainPattern, the orientation of this transmitter does not affect the communications analysis. The orientationAxes parameter in this constructor is made available to allow configuration for other analyses that may require it to be set.

Parameters:

name - The name of the transmitter.

location - The Point defining the location of the receiver over time.

orientationAxes - The Axes defining the orientation of the receiver over time.

carrierFrequency - The frequency, in Hertz, that this transmitter broadcasts on.

effectiveIsotropicRadiatedPower - The power, in Watts, that this transmitter broadcasts isotropically

bandwidth - The bandwidth of the signal, in Hertz.

polarizationSource - The polarization source for modeling polarization efficiency.

SimpleAnalogTransmitter

protected SimpleAnalogTransmitter(@Nonnull
                                  SimpleAnalogTransmitter 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

Overrides:

clone in class Platform

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(Platform 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).

Overrides:

checkForSameDefinition in class Platform

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(SimpleAnalogTransmitter 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 SimpleAnalogTransmitter.checkForSameDefinition(agi.foundation.platforms.Platform) method.

Overrides:

computeCurrentDefinitionHashCode in class Platform

Returns:

The computed hash code.

enumerateDependencies

public void enumerateDependencies(DependencyEnumerator enumerator)

Enumerates the dependencies of this object by calling DependencyEnumerator#enumerate(T) for each object that this object directly depends upon. Derived classes which contain additional dependencies MUST override this method, call the base implementation, and enumerate dependencies introduced by the derived class.

Specified by:

enumerateDependencies in interface IEnumerateDependencies

Overrides:

enumerateDependencies in class Platform

Parameters:

enumerator - The enumerator that is informed of the dependencies of this object.

getEffectiveIsotropicRadiatedPower

public final double getEffectiveIsotropicRadiatedPower()

Gets the Effective Isotropic Radiated Power (EIRP) in Watts. This represents the radiated power level in all directions from the transmitting antenna.

setEffectiveIsotropicRadiatedPower

public final void setEffectiveIsotropicRadiatedPower(double value)

Sets the Effective Isotropic Radiated Power (EIRP) in Watts. This represents the radiated power level in all directions from the transmitting antenna.

getCarrierFrequency

public final double getCarrierFrequency()

Gets the frequency of the signal, in hertz.

setCarrierFrequency

public final void setCarrierFrequency(double value)

Sets the frequency of the signal, in hertz.

getBandwidth

public final double getBandwidth()

Gets the bandwidth of the signal, in hertz.

setBandwidth

public final void setBandwidth(double value)

Sets the bandwidth of the signal, in hertz.

getGenerationTimes

public final TimeIntervalCollection getGenerationTimes()

Gets a collection of the time intervals when the transmitter is broadcasting.

toComplexAnalogTransmitter

public final ComplexAnalogTransmitter toComplexAnalogTransmitter()

Converts this analog transmitter to an equivalent ComplexAnalogTransmitter.

Returns:

A ComplexAnalogTransmitter that is equivalent to this simple transmitter.

getIdentifier

public final SignalIdentifier getIdentifier()

Gets the identifier for this transmitter's signals.

Specified by:

getIdentifier in interface IIdentifiableTransmitterService

setIdentifier

public final void setIdentifier(SignalIdentifier value)

Sets the identifier for this transmitter's signals.

getPolarizationSource

public final PolarizationSource getPolarizationSource()

Gets the polarization source for modeling polarization efficiency.

setPolarizationSource

public final void setPolarizationSource(PolarizationSource value)

Sets the polarization source for modeling polarization efficiency.