脉冲噪声下基于广义循环相关熵的DOA估计  

DOA Estimation Based on Generalized Cyclic Correntropy under Impulsive Noise

作　　者：蔡睿妍[1,2] 杜晶 Cai Ruiyan;Du Jing(College of Information Engineering,Dalian University,Dalian 116622,China;Key Laboratory of Communication and Network,Dalian University,Dalian 116622,China)

机构地区：[1]大连大学信息工程学院,大连116622 [2]大连大学通信与网络重点实验室,大连116622

出　　处：《战术导弹技术》2020年第6期132-139,共8页Tactical Missile Technology

基　　金：国家自然科学基金(61901080)。

摘　　要：作为阵列信号处理的重要研究领域,DOA估计在反辐射导弹、射电天文学、雷达信号处理等军事和民用领域有着广阔的应用前景。针对脉冲噪声环境下传统的子空间类DOA估计算法性能退化问题,提出了广义循环相关熵的概念,给出了基于广义循环相关熵的ESPRIT算法。首先由阵列输出信号构建广义循环相关熵,再通过广义循环相关熵估计矩阵获取信号子空间,利用信号子空间的旋转不变性实现目标源的DOA估计。仿真结果表明:较之现有DOA估计算法,提出的算法能够更好地抑制脉冲噪声。As an important research field of array signal processing,direction of arrival(DOA)estimation has emerged as a promising technology in many military and civil applications,such as anti-radiation missile,radio astronomy and radar signal processing.Aiming at the performance degradation of traditional subspace DOA estimation algorithm in impulsive noise environments,the concept of generalized cyclic correntropy is proposed,and an ESPRIT algorithm based on generalized cyclic correntropy is given.The generalized cyclic correlation entropy is firstly constructed by the array output signals,and then the signals subspace is obtained through the generalized cyclic correntropy estimation matrix,and the DOA estimation of the target source is realized by the rotation invariance of the signal subspace.The simulation results show that the proposed algorithm can suppress the impulse noise better than the existing DOA estimation algorithm.

关 键 词：ALPHA稳定分布 脉冲噪声 DOA估计 循环平稳 循环相关熵 

分 类 号：TN925.91[电子电信—通信与信息系统]