脉冲噪声下基于循环相关熵和稀疏重构的宽带信号DOA估计  

Wideband DOA Estimation via Cyclic Correntropy and Sparse Reconstruction in the Presence of Impulsive Noise

作　　者：张家成 邱天爽 栾声扬 李景春[3] 李蓉[3] ZHANG Jiacheng;QIU Tianshuang;LUAN Shengyang;LI Jingchun;LI Rong(Faculty of Electronic Information and Electrical Engineering,Dalian University of Technology,Dalian 116024,China;School of Electrical Engineering and Automation,Jiangsu Normal University,Xuzhou 221116,China;The State Radio Monitoring Center,Beijing 100037,China)

机构地区：[1]大连理工大学电子信息与电气工程学部,大连116024 [2]江苏师范大学电气工程及自动化学院,徐州221116 [3]国家无线电监测中心,北京100037

出　　处：《电子与信息学报》2020年第11期2587-2591,共5页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61671105,61172108,61139001,81241059,61501301,61801197)。

摘　　要：针对脉冲噪声与同频带干扰并存时宽带信号的波达方向(DOA)估计问题,该文提出一种结合循环相关熵(CCE)与稀疏重构的算法。首先,分析了宽带信源的接收信号模型,并利用循环相关熵的性质构造出对脉冲噪声与同频带干扰具有抑制能力的宽带信号虚拟输出阵列。随后对该虚拟输出阵列进行稀疏表示,并通过归一化迭代硬阈值(NIHT)算法进行稀疏重构,从而估计宽带信号的波达方向。实验结果表明,该算法对脉冲噪声和同频带干扰具有很好的抑制作用,并且相较已有算法在估计性能方面有明显的改善。To deal with wideband band Direction Of Arrival(DOA)estimation in the presence of impulsive noise and co-channel interferences,a novel method is proposed with the help of Cyclic CorrEntropy(CCE)and sparse reconstruction.Firstly,the received signal model of wideband sources is analyzed and a virtual array output is constructed,which shows resistance to impulsive noise and co-channel interferences via the characteristics of CCE.Then,to extract the DOA of wideband signals,the virtual array output with a sparse structure is represented and the Normalized Iterative Hard Thresholding(NIHT)is utilized to solve the sparse reconstruction problem.Comprehensive simulation results demonstrate that the proposed method has efficient suppression on impulsive noise and co-channel interference and it can improve both accuracy and efficiency than existing methods.

关 键 词：宽带DOA 脉冲噪声 循环相关熵 稀疏重构 

分 类 号：TN911.7[电子电信—通信与信息系统]