基于非圆性的伪码引信欺骗干扰抑制算法  

Algorithm of PN Fuze Deception Jamming Suppression Based on Noncircularity

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：《火力与指挥控制》2016年第1期121-124,共4页Fire Control & Command Control

摘　　要：针对单通道伪码引信欺骗干扰问题,提出了一种基于信号非圆性盲分离的欺骗干扰抑制方法。该算法首先利用伪码信号的非圆性构造虚拟通道,使欠定问题转化为适定问题,然后对传统SSOS算法中的代价函数进行共轭梯度寻优,以提高算法的收敛速度,最后利用分离信号延时变化量区分回波与干扰。理论分析与实验仿真表明,修正的SSOS算法收敛速度明显优于原算法,且当信噪比(SNR)大于5 d B时,即使干信比(JSR)很高,回波相似度可达80%以上。A novel algorithm based on the modified SSOS is studied to solve the deception jamming suppression of single-channel PN fuze. First,noncireularity is used to construct the virtual channel,so the underdetermined BSS is changed into well-determined BSS. Second,the conjugate gradient is applied to modify the last, the separated signals the modified SSOS algorithm similarity coefficient is larger the original SSOS,which improved the algorithm＇s separation speed. In are identified using the delay difference. Simulation results show that is superior to the original one, and when SNR〉5dB,the separated echo＇s than 80 % even the JSR is higher.

关 键 词：复值盲分离 欺骗干扰抑制 伪码引信 单通道 

分 类 号：TN974[电子电信—信号与信息处理]