时频分析在毫米波防撞雷达信号处理中的应用  

Application of Time-Frequency Analysis for Radar Signal Processing in Millimeter-Wave Collision Prevention Radar System

作　　者：金昶明[1] 徐涛[1] 孙晓玮[1] 夏冠群[1] 盛怀茂[1] 李玉芳[1] 

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050

出　　处：《电子学报》2002年第9期1413-1413,共1页Acta Electronica Sinica

基　　金：中国博士后基金(No.2001[5」)

摘　　要：论述了调频连续波雷达系统的组成原理,完成了毫米波雷达信号处理机采集系统的硬件设计和算法研究,并在此基础上提出了一种基于时频分析技术的概率统计法,用该法对实际的 35GHz FMCW汽车防撞毫米波雷达系统的中频信号进行了分析.研究结果表明,采用本文的方法只需采样一次就可以有效解决实际雷达系统中频信号频谱的随机抖动,减少对目标的误判,是一种具有应用前景的新方法。Signal processing system and its algorithm have been developed on the basis of the principle of triangle wave FMCW radar system. The time-frequency distribution method is introduced and the algorithm of Wigner-Ville distribution (WVD) is employed. Based on the WVD,the probability statistic method is proposed to analyze signals of 35GHz FMCW collision prevention millimeter radar system.The research shows that the method proposed can reduce the target's false judgement caused by frequency spectrum shiver in sampling signal only once.The paper shows it is an effective and prospective method in radar signal processing.

关 键 词：毫米波 时频分析 信号处理 防撞雷达系统 汽车 

分 类 号：TN957.51[电子电信—信号与信息处理]