G - Physics – 01 – S
Patent
G - Physics
01
S
G01S 13/56 (2006.01) G08B 13/24 (2006.01)
Patent
CA 2669570
In the case of a radar arrangement for monitoring a monitoring area (1) having a radar transmitter (in 3) which continuously emits a measurement signal, having a radar receiver (in 3) for the measurement signal reflected from a moving object (6) and having an evaluation device for evaluation of a Doppler frequency, and improvement is achieved in object identification and a reduction is achieved in false alarms by providing at least one reflector (4) in the emission area of the radar transmitter (in 3), which reflects a radar signal emitted from the radar transmitter (in 3) to the radar receiver (in 3), by the evaluation of the Doppler frequency being periodically interrupted, and by the capability to switch the evaluation device, during the interruption, to evaluation of the existence or strength of the radar signal received by the radar receiver (in 3).
L'invention concerne un système de radar destiné à la surveillance d'une zone (1) à surveiller, ledit système présentant un émetteur radar (dans 3) qui émet en continu un signal de mesure, un récepteur radar (dans 3) qui reçoit le signal de mesure réfléchi par un objet mobile (6) et un dispositif d'évaluation qui évalue la fréquence Doppler. L'invention entraîne une amélioration de la détection des objets et une réduction des alarmes erronées en prévoyant dans la zone d'émission de l'émetteur radar (dans 3) au moins un réflecteur (4) qui réfléchit un signal radar émis par l'émetteur radar (dans 3) en direction du récepteur radar (dans 3), en interrompant périodiquement l'évaluation de la fréquence Doppler et en basculant pendant une interruption le dispositif d'évaluation sur une évaluation de la présence ou de la force du signal radar reçu par le récepteur radar (dans 3).
Kirby Eades Gale Baker
S.m.s. Smart Microwave Sensors Gmbh
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