实验科学与技术2024，Vol.22Issue(2)：21-25,5.DOI:10.12179/1672-4550.20230524
大间距均匀阵列抗模糊DOA估计实验研究
Experimental Study on Anti-ambiguity DOA Estimation of Large Spacing Uniform Arrays
摘要
Abstract
In the direction of arrival(DOA)estimation,when the unit spacing of the receiving antenna array is greater than the half wavelength of the incident signal carrier,the manifold ambiguity will occur,which poses a challenge to distinguish the real signal DOA.Based on a subarray level large spacing uniform dual-polarization array,this article proposes to randomly change the polarization state of a certain unit in each subarray,so that the corresponding steering vectors of different subarrays are independent of each other.It can break the linearity between the steering vectors under a large spacing uniform array and suppress manifold ambiguity.The simulation and experimental results show that this method can effectively remove spurious peaks in the spatial spectrum of the multiple signal classification(MUSIC)algorithm and achieve a high-precision DOA estimation.关键词
DOA估计/阵列流形模糊/均匀阵列/极化/MUSIC算法/伪峰Key words
DOA estimation/manifold ambiguity/uniform array/polarization/MUSIC algorithm/spurious peaks分类
电子信息工程引用本文复制引用
杨浩,杨鹏..大间距均匀阵列抗模糊DOA估计实验研究[J].实验科学与技术,2024,22(2):21-25,5.基金项目
国家自然科学基金(62171103) （62171103）
电子科技大学研究生教改项目(JYJG2021404) （JYJG2021404）
