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Apparatus and method for processing multiple frequencies in satellite navigation systems

  • US 5,805,108 A
  • Filed: 09/16/1996
  • Issued: 09/08/1998
  • Est. Priority Date: 09/16/1996
  • Status: Expired due to Term
First Claim
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1. A system for optimum correlation processing of at least three signals M1, M2, and M3 emanating from the same satellite belonging to the satellite positioning system (SPS), said system comprising:

  • a RECEIVING CIRCUIT for receiving and preparing for processing each said M1, M2, and M3 signal; and

    a DIGITAL SIGNAL PROCESSING CIRCUIT for processing each said M1, M2, and M3 signal in order to perform the code and carrier measurements to solve for user'"'"'s position, velocity, and time coordinate;

    wherein the availability of at least three M1, M2, and M3 signals increases the accuracy in finding the user'"'"'s position, velocity, and time coordinate.

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