Package com.luciad.format.asterix

Class ALcdASTERIXReferenceProvider

java.lang.Object

com.luciad.format.asterix.ALcdASTERIXReferenceProvider

Direct Known Subclasses:

TLcdASTERIXReferenceProvider

public abstract class ALcdASTERIXReferenceProvider
extends Object

Provides the model references for ASTERIX categories which are not decoded as WGS84 lon/lat coordinates. Some ASTERIX categories are for example specified relative to the radar location, but that radar location is not present in the data. Furthermore the details of how the data needs to be interpreted (the exact definition of the grid reference) is radar dependent. This provider allows to assign a model reference to such data.

At the moment, this class is only used for ASTERIX category 240 (radar video). For other categories, see ALcdASTERIXTransformationProvider. TLcdASTERIXReferenceProvider is a default implementation of this class which can be used for static radar platforms.

Since:

2014.1

Constructor Summary

Constructors

Constructor	Description
ALcdASTERIXReferenceProvider()

Method Summary

Modifier and Type	Method	Description
abstract ILcdModelReference	getModelReference(int aSacSic, ALcdASTERIXModelDescriptor aDescriptor, Object aObject)	Returns the model reference in which the ASTERIX data is expressed.

Methods inherited from class java.lang.Object

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

Constructor Details

ALcdASTERIXReferenceProvider

public ALcdASTERIXReferenceProvider()

Method Details

getModelReference

public abstract ILcdModelReference getModelReference(int aSacSic,
 ALcdASTERIXModelDescriptor aDescriptor,
 Object aObject)

Returns the model reference in which the ASTERIX data is expressed. The returned reference should describe grid coordinates relative to the radar (e.g. using an azimuthal equidistant projection with the origin on the radar's position). In other words, the model reference implicitly defines the position and orientation of the radar platform.

Parameters:

aSacSic - The System Area Code (SAC) and System Identification Code (SIC) defining which surveillance system (radar) is used. Bits 9 to 16 represent the SAC code, the geographical area. The lower 8 bits represent the SIC code, the identification of a surveillance system within the given SAC. An overview of available SAC codes can be retrieved from www.eurocontrol.int/asterix.

aDescriptor - The model descriptor of the model for which a reference is being requested. Can for example be used to retrieve the user application profile.

aObject - Domain object contained in the model for which a reference is being requested.

Returns:

a model reference that encapsulates the position and orientation of the radar platform