单通道伪码引信欺骗干扰分离算法  

Separation Algorithm of Single Channel PN Fuze Deception Jamming

作　　者：尹洪伟[1] 李国林[1] 路翠华[1] 

机构地区：[1]海军航空工程学院,山东烟台264001

出　　处：《探测与控制学报》2015年第6期31-34,40,共5页Journal of Detection & Control

摘　　要：针对复域盲分离算法运算量较大的问题,提出了单通道伪码引信欺骗干扰分离的实域算法。该算法首先利用伪码信号的非圆性,将接收信号的实域和复域分别作为两路接收信号,从而将欠定盲分离问题转化为适定模型,同时也将复数盲分离问题转化为实域盲分离,然后利用FastICA算法实现了混合信号分选。仿真结果表明,提出的实域信号分离方法使分离速度较复域分离算法提高了近85%,当SNR>5dB时,分离回波信号相似度可达80%以上,且在低信噪比下实数分离算法具有更好的信号分离性能。A real domain algorithm of single channel PN fuze deception jamming separation was studied to solve the problem of the larger amount of calculation in complex domain blind source separation（BSS）. Firstly, non-circularity was used to construct the virtual channel, so the underdetermined BSS was changed into well--deter- mined BSS, and also the complex-value BSS was changed into real-value BSS. Then, the Fast ICA algorithm was used to separate the mixed signals. Simulation results showed that the separation speed of the proposed real-value method was improved nearly 85% compared with the complex one, and when SNR〉5 dB, the separated echo＇s similarity coefficient was over 80%, and the proposed method had better separation performance under the low SNR.

关 键 词：复值CMN FASTICA 欺骗干扰 伪码引信 单通道 

分 类 号：TN974[电子电信—信号与信息处理]