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Satellite positioning system augmentation with wireless communication signals

  • US 5,999,124 A
  • Filed: 04/22/1998
  • Issued: 12/07/1999
  • Est. Priority Date: 04/22/1998
  • Status: Expired due to Term
First Claim
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1. A method for processing position information, said method comprising:

  • receiving in a SPS receiver SPS signals from at least one SPS satellite;

    transmitting cell based communication signals between a communication system coupled to said SPS receiver and a first cell based transceiver which is remotely positioned relative to said SPS receiver wherein said cell based communication signals are wireless;

    determining a first time measurement which represents a time of travel of a message in said cell based communication signals in a cell based communication system which comprises said first cell based transceiver and said communication system;

    determining a second time measurement which represents a time of travel of said SPS signals;

    determining a position of said SPS receiver from at least said first time measurement and said second time measurement, wherein said cell based communication signals are capable of communicating data messages in a two-way direction between said first cell based transceiver and said communication system.

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