Position determining system

Details Position determining system Position determining system

G - Physics

01

S

G01S 5/00 (2006.01) G01S 1/04 (2006.01) G01S 5/02 (2006.01) G01S 5/10 (2006.01)

Patent

CA 2230982

The invention relates to a position determining system, for receiving digital telephone signals transmitted by a number of transmission sources (BTS). The system has a pair of receiving stations (CBU and CRU), one at a known position (O) and another on a roving object (R); a position determining processor (CPP); and means for passing a link signal (L1 and L2), from each of the receiving stations to the position determining processor, the link signal containing information about the signals received at the receiving station from the transmission sources. Each of the receiving stations is arranged to receive the signals from the respective transmission sources substantially simultaneously. The position determining processor is arranged to compare the information received from the one receiving station with the information received at the other receiving station, and to determine the time delay between the respective signals received at both receiving stations in order to determine the position of the roving object.

L'invention concerne un système de localisation, permettant de recevoir des signaux téléphoniques numériques transmis par plusieurs sources d'émission (BTS). Ce système est constitué par une paire de stations de réception (CBU et CRU), l'une en position connue (O) et l'autre sur un objet mobile (R); un processeur de localisation (CPP); et un moyen permettant de faire passer un signal de liaison (L1 et L2) de chacune des stations de réception au processeur de localisation, le signal de liaison contenant des informations sur les signaux reçus par la station de réception en provenance des sources d'émission. Chacune des stations de réception est conçue pour recevoir les signaux des sources d'émission respectives de manière sensiblement simultanée. Le processeur de localisation est conçu pour comparer les informations reçues de l'une des stations de réception avec les informations reçues par l'autre et pour déterminer le retard entre les signaux respectifs reçus par ces deux stations de réception en vue de déterminer la position de l'objet mobile.

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