Two Dimensional DoA Using Non-Uniform L-Shaped Array

Mahmoud naeiny | Yasoub Eghbali | Ali Panahzadeh

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=148001
Date :  2020/11/18
Publish in :    7th iranian conference on radar and surveillance systems

Link :  https://www.radar2020.mut.ac.ir/paper?manu=43772
Keywords :2-D DoA, Toeplitz, pair matching, L-shaped

Abstract :

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This study presents a new two dimensional (2-D) direction of arrival (DoA) estimation method. In the proposed method, an L-shaped array with non-uniform subarrays is used. By vectorizing of the covariance matrices of the subarrays along x and z axes, two new vectors are obtained. Using these vectors, two covariance matrices with Toeplitz structure are constructed. Applying the MUSIC algorithm to each Toeplitz covariance matrix, the azimuth and elevation angles of sources are estimated independently. To perform pair matching of the estimated angles, an extended vector can be obtained by concatenating the received signal vectors. By Eigen decomposition of the covariance matrix of the extended signal vector, the estimated azimuth and elevation angles are paired. Simulation results reveal that the proposed method improves the estimation accuracy of 2-D DoA estimation, and it can pair the azimuth and elevation angles with high probability of correct matching.

https://www.radar2020.mut.ac.ir/paper?manu=43772