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1. (WO2001039155) AIRCRAFT LOCATION SYSTEM FOR AIRPORTS

Pub. No.:    WO/2001/039155    International Application No.:    PCT/GB2000/004474
Publication Date: Fri Jun 01 01:59:59 CEST 2001 International Filing Date: Tue Nov 28 00:59:59 CET 2000
IPC: G08G 5/06
Applicants: CORRIGAN, Nigel
Inventors: CORRIGAN, Nigel
Title: AIRCRAFT LOCATION SYSTEM FOR AIRPORTS
Abstract:
A system for providing ground location messages to an aircraft equipped with a Marker receiver, comprising a plurality of message transmitting devices arranged at different locations, each message transmitting device comprising: a radio transmitter (81, 82) operating at standard Marker Beacon frequency and connected to antenna means arranged to radiate a signal within a predetermined area at the location; message storage means (76, 77) connected to the transmitter for storing a voice message to be transmitted thereby; and detector means (72) for detecting the presence of an aircraft within said predetermined area and for actuating the transmitter to transmit the voice message in response to detection of an aircraft.