阵元缺损下的波达方向估计算法  

A Novel DOA Estimation Algorithm in Conditions of Array Elements Deficiency

作　　者：张永顺[1,2] 葛启超 丁姗姗[1] 

机构地区：[1]空军工程大学防空反导学院,西安710051 [2]信息感知技术协同创新中心,西安710077

出　　处：《电子科技大学学报》2017年第4期501-504,512,共5页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(61372033;61501501)

摘　　要：为解决在均匀线阵中阵元降采样或其他因素引起的阵元损坏导致角度估计精度下降的问题,该文对缺损的采样数据矩阵进行Hankel矩阵变换,利用Hankel矩阵变换的性质以及矩阵填充理论,将不满足矩阵填充理论的接收数据矩阵变换为适用于矩阵填充理论的数据矩阵,通过不定增广拉格朗日乘子法精确重构出完整的接收数据矩阵,实现了精确的波达方向估计。仿真实验验证了该方法在均匀线阵阵元出现损毁的情况下,仍能实现对角度的精确估计,同时给出了算法随阵元缺损程度变化的性能变化趋势。In order to solve the accuracy decrease in angle estimation caused by the undersampling or the damage of the array elements in the uniform linear array, the matrix completion theory and Hankel matrix characteristic are exploited to transform the undersampling data matrix into a two-fold Hankel matrix. The completed data matrix is reconstructed by inexact augmented Lagrange multiplier method and the accurate angle estimation is achieved. Simulation results demonstrate that the proposed method is still effective with damaged and missing elements and show the tendency of the proposed method versus the different elements damage of the uniform linear array.

关 键 词：矩阵填充 Hankel钜阵 不定增广拉格朗日乘子法 波达方向估计 

分 类 号：TN911.7[电子电信—通信与信息系统]