LPI雷达信号特征提取综合时频算法  

A Integrated Time-Frequency Algorithm for Extracting Inner-pulse Features of LPI Radar Signal

作　　者：熊坤来[1] 罗景青[1] 

机构地区：[1]解放军电子工程学院,合肥230037

出　　处：《火力与指挥控制》2011年第11期102-105,共4页Fire Control & Command Control

摘　　要：如何准确提取LPI雷达信号脉内特征参数一直都是雷达信号处理中的一个难点。提出一种综合时频算法来提取雷达信号的脉内特征,首先把稳健的小波变换法与分辨率较高的伪威格纳威尔分布(Pseudo Wigner-Ville Distribution,PWVD)法进行截断综合,再对综合的时频图提取小波脊线从而得到稳健、高精度的脉内特征参数。仿真实验说明了该算法的有效性。Extracting exactly the inner-pulse feature parameter of LPI radar signal was always a difficult problem in radar signal processing.A integrated Time-Frequency method was proposed in this paper.Through the colligation of steady wavelet transformation and precise PWVD transformation,then we can extract inner-pulse features of radar signal exactly in the integrated Time-Frequency figure.The results of the emulation show the validity of this method.

关 键 词：小波变换 伪威格纳威尔分布 时频分析 脉内特征提取 

分 类 号：TN974[电子电信—信号与信息处理]