互质极化阵列的DOA估计算法研究  

Direction of Arrival Estimation Algorithm Based on the Polarization Co-prime Array

作　　者：姜阳 赵勇武 李晴晴 张军星 蒋驰 董文 JIANG Yang;ZHAO Yong-wu;LI Qing-qing;ZHANG Jun-xing;JIANG Chi;DONG Wen(Air Force Early Warning Academy,Wuhan 430019,Hubei,China;Shanghai Radio Equipment Research Institute,Shanghai 201109,China)

机构地区：[1]空军预警学院,湖北武汉430019 [2]上海无线电设备研究所,上海201109

出　　处：《制导与引信》2021年第1期13-19,48,共8页Guidance & Fuze

摘　　要：针对极化阵列计算复杂度高、互耦效应大的难点问题,提出一种基于三正交偶极子互质阵列的极化稀疏算法,用于波达方向(DOA)估计。首先充分利用三正交偶极子三个通道的所有信息,形成一个拥有更多阵元的虚拟线阵,使得原本不相干的信号变为相干信号;然后进一步使用前后向空间平滑的方法对虚拟阵列的协方差矩阵进行解相干。该算法可以扩展阵列孔径并降低计算复杂度。通过多组仿真验证极化稀疏算法的有效性,证明该算法有较高的估计精度。To solve the problem of high computational complexity and large mutual coupling effect of polarized array,a polarized sparse algorithm based on three-cross dipole co-prime array is proposed for direction of arrival(DOA)estimation.A virtual linear array with more array elements is formed,by making full use of all information of the three channels of three-cross dipole,so that the uncorrelated signals become coherent signals.Then the forward and backward spatial smoothing method is used to decoherence the covariance matrix of virtual array.The algorithm can expand the array aperture and reduce the computational complexity.The effectiveness of the polarized sparse algorithm is verified by several groups of simulation experiments.The results show that the algorithm has better estimation accuracy.

关 键 词：阵列信号处理 电磁矢量传感器 互质阵列 阵列扩展 波达方向估计 

分 类 号：TJ765.3[兵器科学与技术—武器系统与运用工程]