【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。更多还原

【Abstract】 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.更多还原