汽车防撞雷达测试方法浅析

Analysis of test method of automobile anti-collision radar

汽车电子设备是保证汽车安全的重要设备,防撞雷达是无人驾驶汽车电子的关键部件,它能检测出与其周围车辆的距离和相对速度。从对汽车防撞雷达的工作原理分析,导出毫米波防撞雷达需要测试的性能参数,提出用毫米波变频收发模块将毫米波信号变频到射频频段,用射频频段的频谱分析仪和调制域分析测量毫米波雷达信号的参数,用任意波形发生器代替专用雷达目标模拟器,结合矢量调制器,模拟出雷达目标的距离和速度,再通过毫米波变频收发模块,将目标信号反馈给汽车防撞雷达,从而实现汽车防撞雷达物理参数和综合参数测试。

Automotive electronic equipment is an important equipment to ensure the safety of vehicles,anti-collision radar is a key component of unmanned vehicle electronics,it can detect the distance and relative speed with the surrounding vehicles.Based on the analysis of the working principle of the anti-collision radar,the performance parameters of the millimeter wave anti-collision radar need to be detected are derived.the millimeter wave frequency conversion transceiver module is used to convert the millimeter wave signal to the radio frequency band.the spectrum analyzer and modulation domain of the radio frequency band are used to analyze and measure the parameters of the millimeter wave radar signal.the arbitrary waveform generator is used to replace the special radar target simulator.the distance and speed of the radar target are simulated by the vector modulator.then the target signal is fed back to the anti-collision radar through the millimeter wave frequency conversion transceiver module,thus the physical parameters and comprehensive parameters of the anti-collision radar are tested.