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Multibeam position ambiguity resolution

  • US 5,412,389 A
  • Filed: 08/11/1993
  • Issued: 05/02/1995
  • Est. Priority Date: 08/11/1993
  • Status: Expired due to Term
First Claim
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1. A method of distinguishing an actual position from an image position in a location determination system, said actual position being identified from first and second positions symmetrically located about a distinguishing line, and said method comprising the steps of:

  • projecting a plurality of antenna beams in a plurality of diverse directions, wherein a first portion of said beams project on a first side of said distinguishing line and a second portion of said beams project on a second side of said distinguishing line;

    receiving a signal transmitted through one of said beams; and

    selecting, as said actual position, the one of said first and second positions which resides on the same side of said distinguishing line as the beam through which said signal was received.

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