南京航空航天大学学报（英文版）2025，Vol.42Issue(1)：90-100,11.DOI:10.16356/j.1005-1120.2025.01.007
用于非圆信号DOA估计的扩展填充嵌套阵列
Extended Nested Array with a Filled Sensor for DOA Estimation of Non-circular Signals
摘要
Abstract
Sparse array design has significant implications for improving the accuracy of direction of arrival(DOA)estimation of non-circular(NC)signals.We propose an extended nested array with a filled sensor(ENAFS)based on the hole-filling strategy.Specifically,we first introduce the improved nested array(INA)and prove its properties.Subsequently,we extend the sum-difference coarray(SDCA)by adding an additional sensor to fill the holes.Thus the larger uniform degrees of freedom(uDOFs)and virtual array aperture(VAA)can be abtained,and the ENAFS is designed.Finally,the simulation results are given to verify the superiority of the proposed ENAFS in terms of DOF,mutual coupling and estimation performance.关键词
非圆信号/扩展嵌套阵列/稀疏阵列/到达方向估计/和差共阵列Key words
non-circular signal/extended nested array/sparse array/direction of arrival(DOA)estimation/sum-difference coarray分类
电子信息工程引用本文复制引用
李晓龙,张小飞,申子晗..用于非圆信号DOA估计的扩展填充嵌套阵列[J].南京航空航天大学学报（英文版）,2025,42(1):90-100,11.基金项目
Acknowledgements This work was supported by China National Science Foundations(Nos.62371225,62371227). （Nos.62371225,62371227）
