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Satellite based aircraft traffic control system

  • US 5,714,948 A
  • Filed: 04/16/1996
  • Issued: 02/03/1998
  • Est. Priority Date: 05/14/1993
  • Status: Expired due to Fees
First Claim
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1. A method of identifying the source of an information transmission using a second transmission, said method comprising the steps of:

  • storing on a vehicle a vehicle identification code identifying the vehicle;

    transmitting information from a communications device on the vehicle;

    automatically detecting, on the vehicle, said step of transmitting the information;

    generating on the vehicle a transmit detect code in response to said step of detecting;

    transmitting said second transmission from the vehicle only while the communications device is transmitting the information, said second transmission comprising the vehicle identification code and the generated transmit detect code;

    receiving the information, the vehicle identification code and the transmit detect code transmitted from the vehicle; and

    identifying that said vehicle is the source of the transmitted information based on said received identification code and the received transmit detect code.

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