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UNDERWATER ACOUSTIC NAVIGATION SYSTEMS AND METHODS

  • US 20140126334A1
  • Filed: 01/15/2014
  • Published: 05/08/2014
  • Est. Priority Date: 12/16/2009
  • Status: Active Grant
First Claim
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1. A receiver for use in an underwater navigation system, the receiver comprising:

  • a hydrophone configured to receive an acoustic transmission from each of a plurality acoustic transmitters, the plurality of acoustic transmitters forming an array, wherein timing information of the acoustic transmissions is based at least in part on a time-base; and

    computer hardware configured to determine a time delay between the transmission and receipt of the acoustic transmission from each acoustic transmitter and to calculate an absolute position of the receiver based at least in part on the time delays, the timing information, and position information and attitude data of the array.

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