现代雷达2013，Vol.35Issue(3)：28-33,6.
一种雷达辐射源双谱二次特征提取方法
A New Scheme for Bispectrum Cascade Feature Extraction of Intra-pulse Modulated Radar Signals
摘要
Abstract
To deal with the problems of emitter sorting caused by parameter complexity and agility of multi-function radars. The bis-pectrum images of radar signals are divided equally into some identical regions and singular value decomposition is used, bispectra distribution entropy and singular spectrum entropy are extracted for the cascade features. This method takes advantage of the superiority of bispectrum analysis in restraining the affection of coloured Gauss noise and retaining the amplitude and phase informations. It organically integrates the advantages of the theory of the bispectrum analysis,singular value decomposition theory and information entropy theory, and fully reflects the intrinsic signal informations. The radar signals are classified by fuzzy C-means for experimentation to demonstrate the validity of this algorithm. Experiments conducted on six typical emitter signals show that the algorithm is of preferably sorting precision under moderate SNR, and surmounts the disadvantages of higher feature dimension and deficient compactness of clusters about traditional methods for feature extraction of pictures.关键词
脉内调制/特征提取/双谱分析/双谱分布熵/奇异谱熵Key words
pulse modulation/ feature extraction/ bispectrum analysis/ bispectra distribution entropy/ singular spectrum entropy分类
信息技术与安全科学引用本文复制引用
张彦龙,张登福,王世强,陈雕..一种雷达辐射源双谱二次特征提取方法[J].现代雷达,2013,35(3):28-33,6.基金项目
国家自然科学基金资助项目(61175029) （61175029）
国防科技重点实验室资助项目(9140C610301080C6106) （9140C610301080C6106）
