Ultra wide band navigation system with mobile base stations

G - Physics – 01 – S

Patent

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Details

G01S 5/10 (2006.01) H04W 84/20 (2009.01)

Patent

CA 2554417

The present invention relates to a method of determining the location of a target. The method includes initializing a set of base stations to determine their location relative to each other. At the target, the time of arrival of at least one signal from each of the plurality of base stations is measured. From this, the location of the target relative to the plurality of base stations may be directly calculated using a closed form solution. In one embodiment, a time of arrival technique is used and in another embodiment a time difference of arrival technique is used. Preferably an ultra-wide band frequency is utilized.

L'invention concerne un procédé pour déterminer l'emplacement d'une cible. Ledit procédé comprend l'initialisation d'un ensemble de stations de base permettant de déterminer leur emplacement les unes par rapport aux autres. Sur la cible, le temps d'arrivée d'au moins un signal provenant de la pluralité des stations de base est mesuré. L'emplacement de la cible par rapport à la pluralité de stations de base peut être directement calculé au moyen d'une solution fermée. Dans un mode de réalisation de l'invention, la technique du temps d'arrivée est utilisée et, dans un autre mode de réalisation, la différence temporelle de la technique d'arrivée est utilisée. De préférence, une fréquences à bande ultra-large est utilisée.

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