文献类型：期刊文献

英文题名：2D DOA estimation by a large-space T-shaped array

作者：Liu, Sheng Zhao, Jing Wu, Decheng Zeng, Cheng Mao, Zhi Huang, Yiwang

第一作者：Liu, Sheng

通信作者：Wu, DC[1]

机构：[1]Tongren Univ, Sch Data Sci, Tongren 554300, Peoples R China;[2]Chongqing Univ Posts & Telecommun, Sch Automat, Chongqing 400065, Peoples R China;[3]Guizhou Inst Technol, Sch Sci, Guiyang 550003, Peoples R China

第一机构：Tongren Univ, Sch Data Sci, Tongren 554300, Peoples R China

通信机构：corresponding author), Chongqing Univ Posts & Telecommun, Sch Automat, Chongqing 400065, Peoples R China.

年份：2022

卷号：130

外文期刊名：DIGITAL SIGNAL PROCESSING

收录：;EI(收录号：20223612699345);Scopus(收录号：2-s2.0-85137166511);WOS:【SCI-EXPANDED(收录号:WOS:000862170600005)】；

基金：This work was supported by the Foundation of Top-notch Talents by Education Department of Guizhou Province of China (KY [2018] 075), the Science and Technology Foundation of Guizhou Province of China (ZK[2022]557, [2020]1Y004), the Natural Science Foundation of Chongqing (cstc2021jcyj-bsh0198), the National Natural Science Foundation of China (62163008, 62066040), PhD Research Start-up Foundation of Tongren University (trxyDH1710) and Tongren Science and Technology Planning Project ((2018)22).

语种：英文

外文关键词：DOA estimation; T-shaped array; Large-space; Mutual coupling

摘要：In this paper, a two-dimensional (2D) direction of arrival (DOA) estimation algorithm by a large-space T-shaped array is proposed. The used T-shaped array consists of a generalized unfolded co-prime array and a symmetrically unfolded co-prime array. The minimum element space (MES) of the proposed T-shaped array can exceed half-wavelength of received signals. The symmetry of the T-shaped array is used to construct an extended cross-covariance matrix, singular value decomposition (SVD) of which can obtain multiple signal subspaces. By combining the co-prime characteristic of element spacing with the rotational invariance of uniform linear array, three extended signal subspaces can be obtained without using virtual elements. Using the three extended signal subspaces, high-precision 2D DOA estimation can be got. The proposed T-shaped array has strong robustness to mutual coupling. The proposed method can eliminate angle ambiguity caused by large-space and has higher estimation precision than many similar 2D DOA estimation algorithms. Many simulation results can prove the performance of the proposed scheme.(c) 2022 Elsevier Inc. All rights reserved.