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基于模糊函数特征优化的雷达辐射源个体识别
引用本文:王磊,姬红兵,史亚.基于模糊函数特征优化的雷达辐射源个体识别[J].红外与毫米波学报,2011,30(1):74-79.
作者姓名:王磊  姬红兵  史亚
作者单位:西安电子科技大学电子工程学院,陕西西安,710071
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
摘    要:对雷达辐射源信号进行模糊函数建模是一种有效的特征提取途径,通过对无意调制的雷达辐射源信号的模糊函数分析,提出了基于模糊函数子空间特征优化的个体识别方法,首先抽取模糊函数的"近零"频偏切片作为辐射源信号的主要特征,继而设计了切片串联策略构建了互补的特征子集对,从而分别利用典型相关分析和鉴别典型相关分析实现了切片特征的融合...

关 键 词:雷达辐射源识别  模糊函数  典型相关分析  鉴别典型相关分析  特征融合
收稿时间:2010/1/14 0:00:00
修稿时间:2010/4/16 0:00:00

Feature optimization of ambiguity function for radar emitter recognition
WANG Lei,JI Hong-Bing and SHI Ya.Feature optimization of ambiguity function for radar emitter recognition[J].Journal of Infrared and Millimeter Waves,2011,30(1):74-79.
Authors:WANG Lei  JI Hong-Bing and SHI Ya
Affiliation:School of Electronic Engineering, Xidian University,School of Electronic Engineering, Xidian University,School of Electronic Engineering, Xidian University
Abstract:Ambiguity Function (AF) modeling for radar signal is a powerful approach to radar emitter feature extraction and recognition. In this work, an ambiguity function (AF) representative-slice based feature extraction and optimization algorithm is presented for unintentional modulation recognition of moving radar emitters. It considers near-zero slices of AF as representative feature set of radar emitters, which not only coincides with the characteristics of real radar signals, but also mitigates the computation problem in existing AF based method and avoids undesired cross terms caused by harmonic or multipath components. Direct Discriminant Ratio (DDR) criterion is further employed to preserve the most discriminant features and boost recognition accuracy, by ranking the kernel points along the representative-slice. Experimental results validate the practical feasibility and effectiveness of the proposed approach on real data of moving radar emitters, as well as synthetic radar data from U.S. Naval Research Laboratory.
Keywords:moving radar emitter recognition  ambiguity function  representative-slice  feature optimization  Direct Discriminant Ratio
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