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Accurate position measuring system

  • US 5,617,100 A
  • Filed: 03/31/1995
  • Issued: 04/01/1997
  • Est. Priority Date: 04/07/1994
  • Status: Expired due to Fees
First Claim
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1. An accurate position measuring system comprising:

  • a communication satellite for performing data transmissions;

    a position measuring satellite for transmitting position measurement data necessary for position measurement calculations;

    a plurality of position reference stations for receiving the position measurement data from said position measuring satellite to calculate their own station positions, for calculating positional error information on the basis of their own station positioning, and for transmitting the positional error information;

    a network station for collecting the positional error information transmitted from the plurality of position reference stations to prepare wide-area positional error information, and for transmitting the wide-area positional error information to said communication satellite; and

    a position measuring device for receiving the position measurement data from said position measuring satellite to calculate its own position, and for receiving the wide-area positional error information transmitted from said network station through said communication satellite to correct its own calculated position using the wide-area positional error information.

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