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Hybrid satellite based positioning system

  • US 20040189515A1
  • Filed: 03/31/2003
  • Published: 09/30/2004
  • Est. Priority Date: 03/31/2003
  • Status: Abandoned Application
First Claim
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1. A method for determining a position of a mobile terminal, comprising:

  • time stamping an auxiliary radio signal received from an auxiliary radio source in a stationary server according to a stationary time reference received in the stationary server from a satellite positioning system to generate a stationary time stamped signal representation;

    time stamping the auxiliary radio signal received from the auxiliary radio source in a mobile terminal according to a mobile time reference received in the mobile terminal from the satellite positioning system to generate a mobile time stamped signal representation;

    transmitting the stationary time stamped signal representation to the mobile terminal;

    correlating the stationary time stamped signal representation with the mobile time stamped signal representation to generate a timing estimate; and

    determining a position of the mobile terminal from the timing estimate and position data of the auxiliary radio source and the stationary server.

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