title: Fast 2D DOA Estimation Algorithm by an Array Manifold Matching Method with Parallel Linear Arrays.
abstract: In this paper, the problem of two-dimensional (2D) direction-of-arrival (DOA) estimation with parallel linear arrays is addressed. Two array manifold matching (AMM) approaches, in this work, are developed for the incoherent and coherent signals, respectively. The proposed AMM methods estimate the azimuth angle only with the assumption that the elevation angles are known or estimated. The proposed methods are time efficient since they do not require eigenvalue decomposition (EVD) or peak searching. In addition, the complexity analysis shows the proposed AMM approaches have lower computational complexity than many current state-of-the-art algorithms. The estimated azimuth angles produced by the AMM approaches are automatically paired with the elevation angles. More importantly, for estimating the azimuth angles of coherent signals, the aperture loss issue is avoided since a decorrelation procedure is not required for the proposed AMM method. Numerical studies demonstrate the effectiveness of the proposed approaches.
authors.affiliation: The State Key Laboratory of Aircraft Tracking Telemetering Command and Communication, Chongqing University, Chongqing 400044, China. yls@cqu.edu.cn.
authors.forename: Lisheng
authors.initials: L
authors.lastname: Yang
authors.affiliation: The State Key Laboratory of Aircraft Tracking Telemetering Command and Communication, Chongqing University, Chongqing 400044, China. 20141213058@cqu.edu.cn.
authors.forename: Sheng
authors.initials: S
authors.lastname: Liu
authors.affiliation: The State Key Laboratory of Aircraft Tracking Telemetering Command and Communication, Chongqing University, Chongqing 400044, China. dongli1983@cqu.edu.cn.
authors.forename: Dong
authors.initials: D
authors.lastname: Li
authors.affiliation: The State Key Laboratory of Aircraft Tracking Telemetering Command and Communication, Chongqing University, Chongqing 400044, China. jiangqp@cqu.edu.cn.
authors.forename: Qingping
authors.initials: Q
authors.lastname: Jiang
authors.affiliation: The State Key Laboratory of Aircraft Tracking Telemetering Command and Communication, Chongqing University, Chongqing 400044, China. hailincao@cqu.edu.cn.
authors.forename: Hailin
authors.initials: H
authors.lastname: Cao
keywords: 2D DOA estimation; array manifold matching; automatic pairing; parallel linear arrays