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Method and apparatus for signal processing in a satellite positioning system

  • US 6,816,710 B2
  • Filed: 05/06/1998
  • Issued: 11/09/2004
  • Est. Priority Date: 05/06/1998
  • Status: Expired due to Term
First Claim
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1. A method for satellite positioning system (SPS) signal processing, said method comprising:

  • receiving at an SPS receiver one or more SPS signals;

    removing pseudorandom noise from said one or more SPS signals to provide a first portion of a narrowband signal and a second portion of a narrowband signal; and

    summing said first and second portions, at least one of said first and second portions being weighted by a weighting factor that is a function of a signal-to-noise ratio (SNR) of at least one of said one or more SPS signals to improve the sensitivity of the SPS receiver;

    wherein said first portion and said second portion contain common information in said one or more SPS signals.

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