基于盒维数与L-Z复杂度的雷达复合干扰特征提取方法  

Feature-Extracting Method for Radar Compound Jamming Signal Based on Box Dimension and L-Z Complexity

作　　者：熊英[1] 刘旻[1] 唐斌[1] 孙闽红[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《数据采集与处理》2008年第6期663-667,共5页Journal of Data Acquisition and Processing

基　　金：武器装备预研基金(51407070304DZ0234)资助项目

摘　　要：针对射频噪声信号和距离欺骗干扰信号的叠加、乘积和卷积3种形式复合的雷达复合干扰信号,提取了盒维数与L-Z复杂度特征,并对盒维数特征的抗噪性能进行了理论推导。通过仿真实验,求得了不同干噪比(Jam-ming-to-noise ratio,JNR)下的L-Z复杂度与盒维数特征分布。最后采用二维特征联合识别方法,对3种雷达复合干扰信号进行了识别,JNR为0 dB时识别概率达到85%以上。The box dimension and the L-Z complexity features of three different radar compos- ite interference signals are extracted aimed at the addition, production and convolution of the range deception jamming signal and RF（Radiofrequency） noise. The result demontrates that the box dimension feature has good anti-noise performance through formula derivation. By Matlab simulation, the distributions of the two features on different jamming-to-noise ratios （JNRs）are obtained. The simulation shows the recognition ratios of all the three composite in- terference signals are more than 85 %when JNR is 0 dB.

关 键 词：雷达复合干扰 特征提取 L—Z复杂度 盒维数 

分 类 号：TN973.1[电子电信—信号与信息处理]