A method for selecting a location determination solution from a set of possible location determination solutions generated from filtered, unfiltered, and loosely filtered ranging signals. The solution is computed using a first algorithm and filtered ranging signals to obtain a filtered location determination solution. Additional location determination solutions are computed using a second algorithm with unfiltered ranging signals to obtain one or more unfiltered location determination solutions. Further additional location determination solutions may be computed using a third algorithm with loosely filtered ranging signals to obtain one or more loosely filtered location determination solutions. A final location determination solution is chosen from the set of filtered location determination solution, unfiltered location determination solutions, and loosely filtered location determination solutions via an optimizing metric, M.

 
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