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Integrated radio direction finding and GPS receiver tracking system

  • US 5,767,804 A
  • Filed: 06/15/1995
  • Issued: 06/16/1998
  • Est. Priority Date: 06/15/1995
  • Status: Expired due to Term
First Claim
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1. A method for locating an object comprising the steps of:

  • attaching a transceiver device to an object to be located,transmitting a signal from said transceiver device, when said transceiver device is activated;

    using said tracking unit to activate said transceiver device to transmit said signal,receiving said signal transmitted by said transceiver device at a tracking unit,determining from said signal received at said tracking unit the range and bearing of said object from said tracking unit,generating position information of said tracking unit using a position determining system coupled to said tracking unit,transmitting said range and bearing of said object from said tracking unit and said position information of said tracking unit from said tracking unit to a base station, andprocessing at said base station said range and bearing of said transceiver device from said tracking unit and said position information of said tracking unit to calculate the position of said object to be located.

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