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Method and Apparatus for Locating Mobile Receivers Using a Wide Area Reference Network for Propagating Ephemeris

  • US 20130234888A1
  • Filed: 04/23/2013
  • Published: 09/12/2013
  • Est. Priority Date: 07/13/2000
  • Status: Active Grant
First Claim
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1. A method of improving acquisition sensitivity of a Global Positioning System (GPS) receiver, comprising:

  • receiving ephemeris from a reference station network;

    generating, using the ephemeris, a first reduced search space for a first satellite signal of a first satellite, wherein the first reduced search space includes a reduced pseudo-range search window and a reduced pseudo-range late search window for the first satellite signal; and

    searching for the first satellite signal, within the reduced search space, using a first increased integration time per search bin of the reduced search space.

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