文献类型：期刊文献

英文题名：A 2-D DOA Estimation Algorithm for Closely Spaced Sources with L-Shaped Array

作者：Nie Xi Qian Guobing Xie Xianbing Zeng Kai Zhang Kesheng

第一作者：Nie Xi

通信作者：Nie, X[1]

机构：[1]Guizhou Inst Technol, Coll Informat Engn, 1 Caiguan Rd, Guiyang 550003, Guizhou, Peoples R China;[2]Southwest Univ, Coll Elect & Informat Engn, 2 Tiansheng Rd, Chongqing 400715, Peoples R China

第一机构：贵州理工学院电气与信息工程学院

通信机构：corresponding author), Guizhou Inst Technol, Coll Informat Engn, 1 Caiguan Rd, Guiyang 550003, Guizhou, Peoples R China.|贵州理工学院电气与信息工程学院;贵州理工学院;

年份：2017

卷号：36

期号：11

起止页码：4498-4511

外文期刊名：CIRCUITS SYSTEMS AND SIGNAL PROCESSING

收录：;EI(收录号：20173904208728);Scopus(收录号：2-s2.0-85029763997);WOS:【SCI-EXPANDED(收录号:WOS:000411173700013)】；

语种：英文

外文关键词：Two-dimensional DOA estimation; L-shaped array; Closely spaced sources

摘要：In this paper, a two-dimensional (2-D) direction of arrival (DOA) estimation algorithm is developed for closely spaced sources with L-shaped array. In the proposed algorithm, we formulate two special matrices related to the covariance matrix of the antenna output by using matrix multiplication, the nonzero eigenvalues and corresponding eigenvectors of which contain the pair matching and DOA information, respectively. The pair-matching procedure is carried out by dealing with the nonzero eigenvalues of two spacial matrices, and theoretical analysis indicates that the pair-matching procedure does not result in the pair-matching failure. The DOAs of the sources are estimated by utilising the eigenvectors corresponding to nonzero eigenvectors, and the DOA estimation accuracy is significantly improved by this means. We also discuss the reason why the presented method can distinguish closely spaced sources. The simulation results validate the performance of the proposed algorithm.