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Position location using global positioning signals augmented by broadcast television signals

  • US 20020199196A1
  • Filed: 05/31/2002
  • Published: 12/26/2002
  • Est. Priority Date: 06/21/2001
  • Status: Active Grant
First Claim
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1. A method for determining the position of a user terminal, comprising:

  • receiving at the user terminal a broadcast television signal from a television signal transmitter;

    determining a first pseudo-range between the user terminal and the television signal transmitter based on a known component of the broadcast television signal;

    receiving at the user terminal a global positioning signal from a global positioning satellite;

    determining a second pseudo-range between the user terminal and the global positioning satellite based on the global positioning signal; and

    determining a position of the user terminal based on the first and second pseudo-ranges, a location of the television signal transmitter, and a location of the global positioning satellite.

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