Method for recognizing vehicle type based on Doppler traffic radar
A type of vehicle identification and radar technology, which is applied in the field of vehicle identification based on Doppler traffic radar, and can solve problems such as high bandwidth requirements, restricted use, and small working angles
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[0054] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0055] figure 1 It is a schematic diagram of the front and side of the Doppler radar site installation. The radar 101 shoots to the lane at a height of 45°. When the target vehicle 102 and the radar move relative to each other, there is a deviation in frequency between the signal received by the radar and the signal sent by the radar. Doppler frequency shift, the calculation formula is as formula (1).
[0056] figure 2 It is a block diagram of the microwave traffic radar system, which is mainly composed of five parts: antenna, transceiver front end, intermediate frequency signal processing, digital signal processing, and information transmission.
[0057] image 3 It is the system block diagram of the back-end digital signal processing part. The digital signal processing unit is mainly composed of an AD chip for data acquisition, a DSP (5416) chip f...
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