RD-MUSIC的二维DOA估计方法

doi:10.3969/j.issn.1001-2400.2013.03.012

Abstract

Abstract:

According to the heavy computation of two-dimensional DOA estimation with 2D-MUSIC, this paper proposes an RD-MUSIC(Reduced-Dimension MUSIC) DOA estimation method without conjunction search or angle pairing. This algorithm decomposes two dimensional DOA estimation into two stage one dimensional DOA estimation. Firstly, we use the rooting method to estimate the angle between signal direction and x axis. Secondly, least square method is used to estimate the angle between signal direction and y axis. Finally, the 2D angle can be obtained with the angle formula. Simulation results show that the angle accuracy of RD-MUSIC is higher than that of 2D-MUSIC in the low SNR condition, and that they are equal in the high SNR condition, but RD-MUSIC has a higher operation speed.

Key words: 2-D direction of arrival, two-dimension MUSIC, reduced-dimension MUSIC, optimization algorithm

CAI Jingjing;LI Peng;ZHAO Guoqing. Two-dimensional DOA estimation with reduced-dimension MUSIC[J].J4, 2013, 40(3): 81-86+144.

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Two-dimensional DOA estimation with reduced-dimension MUSIC

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