uavsim.computers
Class ILSComputer

java.lang.Object
  uavsim.computers.A_NavigationComputer
      uavsim.computers.ILSComputer

public class ILSComputer
extends A_NavigationComputer

Defines a navigation computer that links an ILS (instrument landing system) receiver, ILS instrument, DME (distance measuring equipment) instrument, localizer station, glideslope station, and marker beacons. For simplicity, it is assumed that all stations and beacons are on the same frequency and packaged in an ILSAssembly.

Although this computer accesses a DMEMarkerIndicator, it uses only the marker capability. The distance capability must still be handled by a DMEComputer.

Author:

Dan Tappan [23.10.11]

Field Summary

private VORLocalizerGlideslope	_ilsInstrument the ILS instrument
private VORDMEReceiver	_ilsReceiver the ILS receiver
private DMEMarkerIndicator	_markerInstrument the marker instrument

Fields inherited from class uavsim.computers.A_NavigationComputer

_chart

Constructor Summary

ILSComputer(NavigationChart chart, VORDMEReceiver ilsReceiver, VORLocalizerGlideslope ilsInstrument, DMEMarkerIndicator markerInstrument)
Creates an ILS computer.

Method Summary

AttitudePitch	calculateGlideslopeCorrectionAngle(ILSAssembly ilsAssembly, SevenDOFDescriptor sevenDOFDescriptor) Calculates the glideslope correction angle.
private AttitudeYaw	calculateLocalizerCorrectionAngle(ILSAssembly ilsAssembly, SevenDOFDescriptor sevenDOFDescriptor) Calculates the localizer correction angle.
VORLocalizerGlideslope	getILSInstrument() Gets the ILS instrument.
VORDMEReceiver	getILSReceiver() Gets the ILS receiver.
DMEMarkerIndicator	getMarkerInstrument() Gets the marker instrument.
java.lang.String	toString()
void	update(SevenDOFDescriptor sevenDOFDescriptor) Updates the instrument based on the computed navigation information.
private void	updateMarker(ILSAssembly ilsAssembly, SevenDOFDescriptor sevenDOFDescriptor) Updates the marker instrument based on whether the UAV is over any marker.

Methods inherited from class uavsim.computers.A_NavigationComputer

getNavigationChart, refresh

Methods inherited from class java.lang.Object

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

Field Detail

_ilsInstrument

private final VORLocalizerGlideslope _ilsInstrument

the ILS instrument

_ilsReceiver

private final VORDMEReceiver _ilsReceiver

the ILS receiver

_markerInstrument

private final DMEMarkerIndicator _markerInstrument

the marker instrument

Constructor Detail

ILSComputer

public ILSComputer(NavigationChart chart,
                   VORDMEReceiver ilsReceiver,
                   VORLocalizerGlideslope ilsInstrument,
                   DMEMarkerIndicator markerInstrument)

Creates an ILS computer.

Parameters:

chart - - the navigation chart

ilsReceiver - - the ILS receiver

ilsInstrument - - the ILS instrument

markerInstrument - - the marker instrument

Method Detail

calculateGlideslopeCorrectionAngle

public AttitudePitch calculateGlideslopeCorrectionAngle(ILSAssembly ilsAssembly,
                                                        SevenDOFDescriptor sevenDOFDescriptor)

Calculates the glideslope correction angle.

Parameters:

ilsAssembly - - the ILS assembly

sevenDOFDescriptor - - the UAV 7-DOF descriptor

Returns:

the angle

calculateLocalizerCorrectionAngle

private AttitudeYaw calculateLocalizerCorrectionAngle(ILSAssembly ilsAssembly,
                                                      SevenDOFDescriptor sevenDOFDescriptor)

Calculates the localizer correction angle.

Parameters:

ilsAssembly - - the ILS assembly

sevenDOFDescriptor - - the UAV 7-DOF descriptor

Returns:

the angle

getILSInstrument

public VORLocalizerGlideslope getILSInstrument()

Gets the ILS instrument.

Returns:

the instrument

getILSReceiver

public VORDMEReceiver getILSReceiver()

Gets the ILS receiver.

Returns:

the receiver

getMarkerInstrument

public DMEMarkerIndicator getMarkerInstrument()

Gets the marker instrument.

Returns:

the instrument

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

update

public void update(SevenDOFDescriptor sevenDOFDescriptor)

Updates the instrument based on the computed navigation information.

Specified by:

update in class A_NavigationComputer

Parameters:

sevenDOFDescriptor - - the UAV 7-DOF descriptor

updateMarker

private void updateMarker(ILSAssembly ilsAssembly,
                          SevenDOFDescriptor sevenDOFDescriptor)

Updates the marker instrument based on whether the UAV is over any marker.

Parameters:

ilsAssembly - - the ILS assembly

sevenDOFDescriptor - - the UAV 7-DOF descriptor