ADAS毫米波雷达原理与电磁抗扰能力初探

Principle and Electromagnetic Immunity of ADAS Millimeter-wave Radar

智能车辆多采用毫米波雷达作为环境感知的传感器,以实现驾驶辅助功能。毫米波雷达系统的电磁抗扰能力将影响车辆辅助驾驶功能的实现和行车安全。文章在对毫米波雷达系统的原理和目标识别理论进行研究的基础上,通过模拟目标激活毫米波雷达系统,并在不同等级场强下进行毫米波雷达系统的抗扰测试。试验结果显示毫米波雷达系统在一定场强下受到了外界电磁信号干扰,出现了较严重的情况。通过这次系统的研究,不仅为企业研发试验提供了技术支持,也为相关测试规范的制订进行了技术储备。

Millimeter - wave radar is used as environment - aware sensors in intelligent vehi- cles to achieve driver assistant functions. The electromagnetic immunity of the millimeter - wave radar system will affect the realization of driving assistant function and driving safety. Based on the study of the principle and target recognition theory of the millimeter - wave radar system, the electromagnetic immunity test of the millimeter - wave radar system is carried out under different field strengths. The experimental results show that the millimeter -wave radar system is disturbed by the external electromagnetic signal under certain field strength, and serious situation is occurred. Through the systematic research, technical support can be provided to R＆D and technical reserves are prepared for formulation of the test specifications or standards.