Methods for ambiguity resolution in location determination

Details Methods for ambiguity resolution in location determination Methods for ambiguity resolution in location determination

G - Physics

01

S

G01S 5/00 (2006.01) G01S 5/02 (2010.01)

Patent

CA 2587649

Various heuristics techniques for resolving ambiguity in location determination in environments with or without noise. A final location determination solution may be determined from a set of ambiguous location determination solutions by using clock temporal bias value, by using consistency information of ranging signal order such as the time of arrival or the received power level of the ranging signals, by using the distances to the sources or by using a discriminator function related to noise to select the final location determination solution from a plurality of ambiguous location determination solutions. The main advantage of the heuristic approaches is that redundant measurements are not required for location determination solution disambiguation.

La présente invention concerne un procédé utilisant diverses technique heuristiques pour résoudre l'ambiguïté de détermination de localisation dans des environnements avec ou sans bruit. Une solution de détermination de localisation finale peut être déterminée à partir d'un ensemble de solutions de détermination de localisation ambiguës via à l'utilisation d'une valeur biaisée temporelle d'horloge, via des informations de cohérence des signaux à portée, via l'utilisation des distances jusqu'aux sources et/ou via l'utilisation d'autres fonctions de discriminateur permettant de sélectionner la solution de détermination de localisation finale à partir d'une pluralité de solutions de détermination de localisation ambiguës. Le principal avantage de ces approches heuristiques repose dans le fait que des mesures redondantes ne sont pas requises pour lever l'ambiguïté d'une solution de détermination de localisation.

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