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Method for correcting NLOS error in wireless positioning system

  • US 20040127228A1
  • Filed: 12/30/2002
  • Published: 07/01/2004
  • Est. Priority Date: 12/30/2002
  • Status: Active Grant
First Claim
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1. A method for correcting a non-line-of-sight (NLOS) error in a wireless positioning system, comprising the steps of:

  • a) determining whether the number of received signals from a mobile station (MS) is larger than a predetermined number;

    b) if the number of the received signals from the mobile station is equal to or less than the predetermined number, determining a location of the MS based on a weighting factors obtained through an optimization process with respect to each of the received signals which are assumed to include an error caused by NLOS propagation; and

    c) if the number of the received signals from the mobile station is larger than the predetermined number, determining a location of the MS based on second moments of the received signals.

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