Wigner-Hough变换在车流量检测雷达信号处理中的应用  

Application of Wigner-Hough Transform for Signal Processing in Vehicle Volume Detecting Radar

作　　者：薛伟[1,2] 孙晓玮[1] 余稳[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 [2]中国科学院研究生院,北京100049

出　　处：《数据采集与处理》2008年第4期471-475,共5页Journal of Data Acquisition and Processing

基　　金：上海市信息化专项基金(123)资助项目

摘　　要：在车流量检测雷达中,由于受噪声和干扰的影响,中频信号实际是非平稳的,在频域内很难准确地估计目标参数。本文通过分析目标信号、干扰信号和噪声在Wigner时频平面的分布特性,提出了利用Wigner-Hough变换来估计目标参数的方法;文中同时讨论了Wigner-Hough变换的实现问题。实验结果表明,该方法在车辆目标判断方面具有较好的性能。Influenced by noises and disturbances, the intermediate frequency （IF） signals are nonstationary in a vehicle detecting radar, so it is difficult to estimate target parameters exactly in frequency-domain. The Wigner-Hough transform （WHT） is presented to estimate target parameters based on the analysis of the Wigner-Ville distribution of target signals, disturbance signals and noises in the time-frequency plane; the implementation of the WHT is also discussed. Experimental results show that the method has good performance in the target identification.

关 键 词：时频分析 Wigner—Hough变换 车流量检测雷达 

分 类 号：TN957.51[电子电信—信号与信息处理]