Correction of a pseudo-range model from a GPS almanac

  • US 6,510,387 B2
  • Filed: 11/26/2001
  • Issued: 01/21/2003
  • Est. Priority Date: 04/23/1999
  • Status: Expired due to Term
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First Claim
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1. A method for correcting a Global Positioning System (GPS) pseudo-range model for GPS satellite signals in a device having memory, the device in communication with a server, the method comprising:

  • storing a GPS satellite almanac in the memory;

    generating a pseudo-range model using the almanac;

    generating a copy of the pseudo-range model using the almanac at the server;

    computing corrections to the copy of the pseudo-range model at the server;

    providing the corrections to the device; and

    at the device, using the corrections to improve the pseudo-range model.

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