相干信号零陷加深自适应波束形成算法  

Adaptive Beam-forming of Coherent Signals with Null Depth

作　　者：黄超[1] 张剑云[1] 朱家兵[2] 毛云祥[1] 

机构地区：[1]解放军电子工程学院,安徽合肥230037 [2]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《探测与控制学报》2016年第3期57-60,共4页Journal of Detection & Control

基　　金：博士后基金(2014M552606);博士后基金特别资助(2015T81083);安徽省自然科学基金(1408085MF111)

摘　　要：针对常规自适应波束形成算法在强相干干扰情况下零陷深度不够,甚至干扰抑制失效的问题,提出了相干信号零陷加深自适应波束形成算法。该算法首先通过构造Toeplitz矩阵来解相干,接着重构和优化了干扰加噪声协方差矩阵,最后在相干干扰处自适应形成深零陷。仿真结果表明,该算法能在相干干扰处形成深零陷,且零陷深度可控,具有较好的鲁棒性。Because the traditional adaptive beam-former suffers from the null shallow and even interference suppression failure when the coherent interference is strong,an adaptive beam-forming of coherent signals with null deepen was proposed.Firstly,this algorithm formed a Toeplitz matrix based on covariance matrix of received data.Then the interference-plus-noise covariance matrix was reconstructed.At last,null depth was formed adaptively.The simulation results showed that the algorithm could deepen beam null depth when desired signal and interference were coherent.The algorithm could control the depth of the null,and which had better robustness.

关 键 词：自适应波束形成 相干干扰 干扰抑制 零陷加深 

分 类 号：TN911[电子电信—通信与信息系统]