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High resolution autonomous precision positioning system

  • US 6,865,477 B2
  • Filed: 02/11/2002
  • Issued: 03/08/2005
  • Est. Priority Date: 05/31/1994
  • Status: Expired due to Fees
First Claim
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1. A method of vehicle navigation using an Active Traveling-Wave Device (ATWD), comprising:

  • storing information of cultural or natural features in an area of the ground along and to the sides of a movement path;

    using said ATWD during movement to obtain information of said features along and to the sides of said movement path;

    comparing said stored information with said information obtained by ATWD to determine successive different match points representing different ground locations;

    determining the range and range rate of each of said match points;

    determining the vehicle'"'"'s location and velocity based on repetitive range and range rate measurements of said match points; and

    supplementing the accuracy of said vehicle location and velocity determination with information from at least one of an additional navigation unit.

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