METHOD FOR DETECTION AND IDENTIFICATION OF MOBILE OBJECTS Russian patent published in 2000 - IPC

FIELD: radio engineering. SUBSTANCE: method uses central station and receiving stations. Mobile objects are able to receive control signal and receive and transmit wide- band signal. Receiving stations are able to receive and transmit wide-band signal. Method involves adding personal code of each mobile object to signal of mobile object state and control signal, receiving control signals of mobile objects, and transmission of signal about mobile object state to central station, when personal code of control signal and personal code of mobile object match, as well as when free radio channel is detected for first frequency of receiving stations and central station. When personal code of control signal and personal code of mobile object do not match, as well as, when radio channel of first frequency of receiving stations and central station is busy, transmission of mobile object state to central station at first frequency ends. Then, method involves receiving signal of mobile object state by central station and generation of acknowledgement signal and control signal, which is equipped with personal code and code marker for detection of coordinates. Then, method involves emission of acknowledgement signal and control signal at first frequency, their reception by all mobile objects and at least three receiving stations, ceasing transmission of mobile object state by central station, when acknowledgement signal is received. When, said control signal is received, method involves generation of phase-keyed wide-spectrum signal, which is emitted by each receiving station in sequence. Then, method involves reception of phase-keyed signal by mobile object and its conversion to another phase-keyed signal with another central frequency, retransmission of phase-keyed signal from mobile object to receiving station, reception of phase-keyed signal by receiving station, correlation processing of emitted and received phase-keyed signal and measurement of signal delay in each receiving station, in order to detect minimal delay. Then, method involves generation of signals, which correspond to delays, by respective receiving stations, and their transmission in sequence using second frequency from receiving stations to central station, in order to calculate distance from receiving stations to mobile object by means of distance-measurement method for position detection. EFFECT: improved quality, increased functional capabilities. 8 cl, 8 dwg