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Method and apparatus for estimating the location of a signal transmitter

  • US 20070132577A1
  • Filed: 12/09/2005
  • Published: 06/14/2007
  • Est. Priority Date: 12/09/2005
  • Status: Abandoned Application
First Claim
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1. A method of estimating the location of an object based on estimates of distance between said object and a plurality of known locations, said method comprising the steps of:

  • obtaining estimates of the distance between said object and a plurality of known locations;

    assigning a weighting factor to each of said estimates, said weighting factor being a function of a predicted accuracy of said estimate; and

    determining said estimated location of said object to be a location that is selected from the group of;

    an estimated location that minimizes a weighted squared error, over said plurality of estimates, between (a) said distance estimate and (b) a distance between said corresponding known location and said estimated location of said object; and

    an estimated location that minimizes a weighted squared error, over said plurality of estimates, between (a) said distance estimate and (b) a distance between said corresponding known location and said estimated location of said object, and is within a set of predetermined physical boundaries.

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