稀疏分解在雷达移频干扰抑制方面的应用研究  

Research on radar shift-frequency jamming suppression based on sparse decomposition

作　　者：冯有前[1] 余付平[2] 高大化[1] 安芹力[1] 

机构地区：[1]空军工程大学理学院,西安710051 [2]空军工程大学导弹学院,陕西三原713800

出　　处：《计算机工程与应用》2012年第6期129-130,150,共3页Computer Engineering and Applications

基　　金：陕西省自然科学基础研究计划项目(No.SJ08F10)

摘　　要：移频干扰是对脉冲压缩雷达有效的干扰形式,为了抑制移频干扰对线性调频脉冲压缩雷达的影响,提出构建自适应的联合过完备原子库的思想。根据雷达发射信号与移频干扰信号的特征,构造一组线性调频时移信号和一组线性调频频移信号,由这两部分信号共同构成联合过完备库;利用稀疏分解方法和BP(Basis Pursuit)算法实现干扰抑制和有用信号的重构。实验结果验证了该方法的有效性和正确性。Shift-frequency Jamming is effective jamming to pulse compress radar of the Linear Frequency Modulation signal （LFM）. To suppress shift-frequency jamming, the idea of constructing the combining redundancy dictionary is proposed. A set of LFM shifttime signals and LFM shift-frequency signals are built up according to the features of transmitted signal and jamming signal, the two-part signals form the combining redundancy dictionary. Then jamming suppression and the signal reconstruction are achieved with the sparse decomposition method and BP （Basis PursUit） algorithm. The simulation results show that the proposed method is effective and correct.

关 键 词：联合过完备库 稀疏分解 移频干扰 BP算法 干扰抑制 

分 类 号：TN957.51[电子电信—信号与信息处理]