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概述了工作在毫米波段的汽车防撞雷达的有关情况 ,针对虚警问题 ,提出了一种新的雷达发射信号体制 ,即变斜率步进调频三角形连续波信号 ,分析了该波形的特性 ,给出了其相应的信号处理 ,并提出了一种用于多目标环境中的目标检测算法 .分析和仿真结果表明 ,新的信号体制具有良好的距离和相对速度分辨率 ,且易于产生和处理 ,同时其相应的多目标检测算法能够有效地去除虚警
In this paper, an overview of the automotive anti-collision radar operating in the millimeter-wave band is given. For the false alarm problem, a new radar transmitting signal system is proposed, which is a variable-slope step frequency modulated triangular continuous wave signal. The characteristics of the waveform are analyzed. The corresponding signal processing is proposed and a target detection algorithm is proposed for multi-target environment.The analysis and simulation results show that the new signal system has good distance and relative speed resolution and is easy to generate and process, At the same time its corresponding multi-target detection algorithm can effectively remove false alarms