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Method for extending GPS to underwater applications

  • US 5,119,341 A
  • Filed: 07/17/1991
  • Issued: 06/02/1992
  • Est. Priority Date: 07/17/1991
  • Status: Expired due to Term
First Claim
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1. In combination with a Global Positioning System network of navigation satellites which emit worldwide radio frequency navigation signals, an underwater navigation process comprising the steps of:

  • using a plurality of transducer buoys so that each of them receives said worldwide radio frequency navigation signals from said Global Positioning System network of satellites to determine their position and emit acoustic underwater data messages which contains this position; and

    having an underwater vehicle receive said acoustic underwater data messages from said plurality of transducer buoys so that they can determine their underwater position therefrom.

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