DEVICE TO DETERMINE COORDINATES OF MOBILE OBJECTS, PREDOMINANTLY, COLLECTOR VEHICLES Russian patent published in 2004 - IPC

FIELD: radio systems determining coordinates of mobile objects. SUBSTANCE: invention is related predominantly to radio emergency alarm systems in collector vehicles with establishment of their coordinates when they are attacked or in case of unauthorized penetration into them. Device to determine coordinates of mobile objects includes signal transmitters mounted on mobile objects ( subscriber's stations ), three reference stations as minimum, central station and communication channel. Signal transmitter incorporates former of alarm signal, FM generator, power amplifier and transmitting antenna. Reference repeater station has receiving part, measuring channel, code channel, channel switch, control unit, signal transmission unit, receiving and transmitting antennas. Central station has transmitter, signal receiving unit and signal conversion unit. EFFECT: increased selectivity and noise immunity of reception of alarm signal by suppression of false signals received over image and combination channels as well as over forward channels. 7 dwg