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Carrier-phase-based relative positioning device

  • US 7,026,982 B2
  • Filed: 01/16/2004
  • Issued: 04/11/2006
  • Est. Priority Date: 12/19/2001
  • Status: Expired due to Term
First Claim
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1. A carrier-phase-based relative positioning device, comprising:

  • at least two antennas mounted on a mobile vehicle or on a mobile vehicle and at a fixed location, one of said antennas being specified as a reference antenna; and

    means for estimating an integer ambiguity and a baseline vector from a result of observation of a single phase difference or a double phase difference based on radio waves transmitted by a plurality of position satellites and received by said antennas,wherein a new integer ambiguity is estimated from the previously estimated baseline vector or integer ambiguity when the number of positioning satellites has changed or when the reference position satellite has been switched.

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