一种多分量线性调频辐射源信号分析方法  

Analysis Method for Multi-component Linear Frequency Modulated Emitter Signals

作　　者：竺如生[1] 李亚军[2] 国强[2] 李和平[3] 万建[2] 

机构地区：[1]黑龙江大学信息科学与技术学院,哈尔滨150080 [2]哈尔滨工程大学信息与通信工程学院,哈尔滨150001 [3]西南电子设备研究所,成都610036

出　　处：《电测与仪表》2011年第3期13-19,共7页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(60872108);第二批中国博士后科学基金特别资助项目(200902411);第四十三批中国博士后科学基金项目(20080430903);黑龙江省博士后资助项目(LBH-Z08129);哈尔滨科技创新人才研究专项资金项目(2010RFQXG0302;008RFQXG030)

摘　　要：为实现对多分量线性调频辐射源信号的有效检测和识别,提出一种基于独立分量分析(ICA)联合Wigner-Hough时频分析的多分量线性调频辐射源信号分析方法。该方法采用先时域分离再时频分析的思想,在低信噪比情况下,克服了Wigner-Hough变换对多分量线性调频(LFM)信号特征提取受噪声困扰的问题。仿真结果表明,提出的方法与传统时频分析方法相比,对多分量LFM信号的分离及特征提取效果更好。To effectively detect and recognize multi-component Linear Frequency-Modulated（LFM） emitter signals,a multi-component LFM emitter signal analysis method based on the Independent Component Analysis（ICA） which was combined with the Wigner-Hough transform was proposed.The idea adopted to this method was the time-domain separation and then time-frequency analysis,and in the low SNR cases,the problem which is generally plagued by noised of feature extraction of multi-component LFM signal based on Wigner-Hough transform is overcame.Compared to the traditional method of time-frequency analysis,the computer simulation results show that the proposed method for the multi-component LFM signal separation and feature extraction was better.

关 键 词：WIGNER-HOUGH变换 ICA 多分量LFM 辐射源信号 特征提取 

分 类 号：TN974[电子电信—信号与信息处理]