Vehicle surveillance system
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United States of America Patent
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-
Nov 9, 2004
Grant Date -
Jul 31, 2003
app pub date -
Nov 8, 2002
filing date -
May 9, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
An algorithm for improved tracking of Air Traffic Control Radar Beacon System transponders is disclosed. The algorithm can be combined with a system that includes an interrogator which transmits an interrogation signal to an associated vehicle transponder at a first frequency, preferably 1030 MHZ in accordance with FAA regulations, and a receiver array which receives the transponder reply signal transmitted by the transponder at a second frequency, preferably 1090 MHZ in accordance with FAA regulations. An angle of arrival processor calculates an angle of the received reply signal, and a position processor calculates the vehicle position based on at least the received angle data.
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