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.
出处
《数据采集与处理》
CSCD
北大核心
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
关键词
雷达复合干扰
特征提取
L—Z复杂度
盒维数
radar composite interference
feature extraction
L-Z complexity
box dimension
