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GPS receiver and method for processing GPS signals

  • US 5,781,156 A
  • Filed: 04/23/1997
  • Issued: 07/14/1998
  • Est. Priority Date: 10/09/1995
  • Status: Expired due to Term
First Claim
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1. A computer readable medium containing a computer program having executable code for a GPS receiver, said computer program comprising:

  • first instructions for receiving GPS signals from in view satellites, said GPS signalscomprising pseudorandom (PN) codes;

    second instructions for digitizing said GPS signals at a predetermined rate to producesampled GPS signals;

    third instructions for storing said sampled GPS signals in a memory; and

    fourth instructions for processing said sampled GPS signals by performing a plurality ofconvolutions on said sampled GPS signals, said processing comprising performing said plurality of convolutions on a corresponding plurality of blocks of said sampled GPS signals to provide a plurality of corresponding results of each convolution and summing a plurality of mathematical representations of said plurality of corresponding results to obtain a first position information.

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