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Method and apparatus for measurement processing of satellite positioning system (SPS) signals

  • US 6,313,786 B1
  • Filed: 02/01/1999
  • Issued: 11/06/2001
  • Est. Priority Date: 07/02/1998
  • Status: Expired due to Term
First Claim
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1. A method of measuring times of arrival of satellite signals received in a Satellite Positioning System (SPS) receiver, said method comprising:

  • receiving a plurality of SPS signals from a plurality of SPS satellites;

    characterizing a signal environment corresponding to the location in which said SPS receiver is located, to produce environment data which represents a manner in which SPS signals are propagated locally to said location;

    measuring times of arrival of respective satellite signals from two or more satellites of said plurality of satellites; and

    processing data representing said times of arrival using said environment data to produce a set of times of arrival with which to calculate a location fix for said SPS receiver.

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