Apparatus and method for locating cellular telephones and...

Details Apparatus and method for locating cellular telephones and... Apparatus and method for locating cellular telephones and...

G - Physics

01

S

G01S 5/02 (2006.01) G01S 5/06 (2006.01) G01S 5/12 (2006.01) H04Q 7/36 (2006.01) H04Q 7/38 (2006.01) G01S 5/04 (2006.01)

Patent

CA 2171333

The field of locating cellular telephones suffers from high multipath city environments which affect accuracy. This problem can be overcome by a two tiered approach including a general location determination using cellular base station located system (10) and subsequent finite location using a portable receiver (26) capable of functioning in high multipath environments. Applications include emergency calls and criminal investigations.

Le domaine de la localisation de téléphones cellulaires souffre d'environnements urbains à forte propagation par trajets multiples qui affectent la précision. Ce problème peut être surmonté grâce à une approche en deux étapes qui consiste en une détermination générale de la localisation à l'aide d'un système (10) situé dans une station de base cellulaire, et en une localisation ultérieure finie à l'aide d'un récepteur portable (26) capable de fonctionner dans des environnements à forte propagation par trajets multiples. Les applications comprennent les appels d'urgence et les enquêtes criminelles.

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