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Method and apparatus for collecting, processing and distributing differential global positioning system information using the internet

  • US 6,324,473 B1
  • Filed: 08/04/1997
  • Issued: 11/27/2001
  • Est. Priority Date: 08/04/1997
  • Status: Expired due to Term
First Claim
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1. A method for providing pseudorange correction information, said method comprising:

  • collecting a first set of satellite measurement information from a plurality of fixed reference stations;

    transmitting said first set of satellite measurement information to a central computer system;

    transmitting a second set of satellite measurement information based on the first set of satellite measurement information from said central computer system to a virtual reference station; and

    broadcasting pseudorange correction information based on the second set of satellite measurement information from said virtual reference station.

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