The invention provides an urban traffic jam relieving system based on millimeter wave radar, and the radar transmits a specific wave beam through an antenna to realize road coverage and receives vehicle echoes. The radar physical platform converts the vehicle echoes into digital signals and transmits the digital signals to an internal radar signal processing unit. The radar signal processing unit obtains distance, speed and angle information of a vehicle through signal preprocessing, target constant false alarm rate detection and an angle estimation algorithm, and transmits the distance, speed and angle information to the traffic state discrimination unit through an internet access. And the traffic state judgment unit converts the vehicle information into traffic characteristic parameters, realizes road congestion degree judgment according to the traffic characteristic parameters, and sends the road congestion degree information to the signal lamp control unit. And the signal lamp control unit controls the duration of the traffic lamp signal according to the congestion degree so as to relieve the traffic congestion.
本发明提出了一种基于毫米波雷达的城市交通拥堵缓解系统,雷达通过天线发射特定的波束实现道路覆盖,并接收车辆回波。雷达物理平台将车辆回波转化成数字信号传送至内部的雷达信号处理单元。雷达信号处理单元通过信号预处理、目标恒虚警检测和角度估计算法获得车辆的距离、速度、角度信息,并通过网口传送至交通状态判别单元。交通状态判别将车辆信息转化为交通特征参数以及依据交通特征参数实现道路拥堵程度判断,并将道路拥堵程度信息发送给信号灯控制单元。信号灯控制单元根据拥堵程度实现控制交通灯信号时长从而实现交通拥堵的缓解。
Urban traffic jam relieving system based on millimeter wave radar
一种基于毫米波雷达的城市交通拥堵缓解系统
2023-05-26
Patent
Elektronische Ressource
Chinesisch
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