A method and system for locating a mobile radio receiver in...

G - Physics – 01 – S

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G01S 5/10 (2006.01) G01S 5/14 (2006.01) H04Q 7/38 (2006.01) G01S 5/02 (2006.01)

Patent

CA 2513154

A method of determining the location of a mobile receiver is provided. The method works within a radio system in one or more dimensions, the radio system includes a network of transmitters the positions of which are known. The method comprises the steps of: compiling a list of the signals detected by the receiver; sending said list to a calculation device; constructing a position function which relates to the probability that the receiver is at a given location, which position function has components corresponding to each member of the list, each component including a predetermined probability function that depends on mobile receiver position; and evaluating said position function to determine a position that corresponds to the highest probability of location, and defining that position to be the location of the mobile receiver.

La présente invention se rapporte à un procédé de détermination de la localisation d'un récepteur mobile. Ce procédé fonctionne à l'intérieur d'un système radio à une ou plusieurs dimensions, ledit système radio comprenant un réseau d'émetteurs dont les positions sont connues. Ledit procédé comprend les étapes consistant à : établir une liste des signaux détectés par le récepteur ; envoyer ladite liste à un dispositif de calcul ; élaborer une fonction de position qui est liée à la probabilité que le récepteur soit à un emplacement donné, ladite fonction de position ayant des composantes correspondants à chaque élément de la liste, chaque composante incluant une fonction de probabilité préétablie qui dépend de la position du récepteur mobile ; et évaluer ladite fonction de position pour déterminer une position qui correspond à la plus forte probabilité de localisation, et définir cette position comme étant l'emplacement du récepteur mobile.

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