Traffic flow metering device and method based on ultra-wide-band chaotic pulse
An ultra-broadband, traffic flow technology, applied in the traffic control system of road vehicles, traffic control systems, instruments, etc., can solve the problems of low accuracy, high cost, and difficult installation, and achieve convenient detection, low cost, The effect of low installation difficulty
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[0024] The implementation of the present invention will be further described below with reference to the accompanying drawings and specific examples.
[0025] The invention applies UWB to the detection technology in intelligent transportation, figure 1 Shown is the principle structure diagram of the traffic flow metering system based on the ultra-wideband chaotic pulse, which is distributed at the transmitter end and the receiver end. The chaotic signal generator produces a duration of T c The chaotic narrow pulse m(t) is then modulated by FM as the transmission signal s FM (t), to transmit signal frame length T s with chaotic narrow pulse duration T c difference (T s -T c ) triggers the timing switch to be turned on periodically, every T s time, the trigger timing switch is turned on, and the frequency modulation signal s FM (t) It is sent to the splitter through the timing switch and divided into two paths, one path is sent to the receiver through the power amplifier ...
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