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Airport surface vehicle identification system and method

  • US 5,400,031 A
  • Filed: 03/07/1994
  • Issued: 03/21/1995
  • Est. Priority Date: 03/07/1994
  • Status: Expired due to Fees
First Claim
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1. An airport vehicle identification system for detecting and identifying vehicles on the surface of an airport, comprising:

  • a ground surveillance radar which multiplexes and radiates both i) a conventional radar signal for detecting vehicles on the surface of the airport and ii) a beacon interrogation signal having a carrier signal frequency value f1, and which receives both a reflected skin return signal from a detected vehicle indicative of the vehicle'"'"'s position and an encoded ID signal indicative of the vehicle'"'"'s identity; and

    a frequency translator located on the surface of the airport, includinga first channel including means for receiving said beacon interrogation signal, means for bandshifting said beacon interrogation signal to a carrier frequency value ft and for providing a bandshifted interrogation signal, and means for transmitting said bandshifted interrogation signal; and

    a second channel including means for receiving an identification reply signal from a vehicle, means for bandshifting said identification reply signal to frequency value f1 and for providing a bandshifted reply signal indicative thereof, and means for transmitting said encoded ID signal to said ground surveillance radar.

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