文献类型：期刊文献

英文题名：High-accuracy 2D DOA estimation with three parallel sparse nested array

作者：Jiang, Guojun[1];Huang, Jiacheng[1];Yang, Yunlong[2]

机构：[1]East China Univ Sci & Technol, Sch Informat Sci & Engn, Shanghai 200237, Peoples R China;[2]Donghua Univ, Coll Informat Sci & Technol, Shanghai 201620, Peoples R China

年份：2024

卷号：179

外文期刊名：AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS

收录：;EI(收录号：20242116121976);WOS:【SCI-EXPANDED(收录号:WOS:001243361200001)】；

基金：This work was supported in part by the National Natural Science Foundation of China under Grant 62101190 and Grant 62301141, in part by the Natural Science Foundation of Shanghai, China under Grant 21ZR1416800, and in part by the Fundamental Research Funds for the Central Universities, China under Grant 2232021D-40.

语种：英文

外文关键词：Two-dimensional direction of arrival; Array aperture extension; Mutual coupling; Sparse nested array

摘要：To improve the performance for two-dimensional (2D) direction of arrival (DOA) estimation in the presence of limited antennas in practice, we propose a novel three parallel sparse nested array with extended aperture and reduced mutual coupling. The proposed array consists of three subarrays where locations of antennas have closed -form expressions, to efficiently achieve increased degrees of freedom in difference coarray domain. The unit inter -antenna spacings and the displacements among subarrays are all expanded by D1, D2 or D3 fold for aperture extension and mutual coupling reduction in physical array domain. By exploiting the configuration, the two methods, i.e., BOMP-based and CMT-BCS-based methods, are further explored for high -precision but ambiguous angle estimation, and then the coprime-ness between the displacements is utilized to solve the angle ambiguities. Simulation results demonstrate the superiority of the proposed array and methods for 2D DOA estimation over the existing technologies.