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Method for improving clock accuracy in a wide area positioning pseudolite receiver system architecture

  • US 9,507,010 B2
  • Filed: 12/20/2013
  • Issued: 11/29/2016
  • Est. Priority Date: 12/20/2013
  • Status: Active Grant
First Claim
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1. A computer-implemented method of determining a frequency drift of a clock of a mobile communication device, comprising:

  • receiving a first positioning signal at a first receiver of the mobile communication device controlled by the clock;

    receiving a second positioning signal at a second receiver of the mobile communication device controlled by the clock;

    determining a first position from the first positioning signal, wherein the first position indicates a first geographic position of the mobile communication device;

    determining a second position from the second positioning signal, wherein the second position indicates a second geographic position of the mobile communication device;

    determining a difference between the first position and the second position; and

    determining the frequency drift from the difference between the first position and the second position.

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