基于L型阵列酉变换矩阵重构的二维DOA估计

doi:10.11959/j.issn.1000-0801.2018208

Abstract

Abstract:

The estimation of the direction of arrival of two-dimensional space signals is the key problem in the field of array antennas.Although the traditional two-dimensional MUSIC algorithm has high precision,it needs two dimensional spectrum peak search and has a large amount of operation.A two-dimensional DOA estimation algorithm for L-shaped array was proposed.The output matrix was transformed from a complex value matrix to a real value matrix by matrix reconstruction and a unitary transformation matrix.This method could directly get the elevation angle of the target without conversion,which greatly reduced the amount of operation.Compared with the matrix enhancement and matrix pencil algorithm for L-shaped array,this algorithm could estimate more targets’DOA.The results of simulation show that the algorithm has a high accuracy of DOA estimation.

Key words: direction of arrival, L-shaped array, unitary transformation matrix, eigenvalue, matrix enhancement and, matrix pencil algorithm

Xiu WANG,Qing CHANG,Yaoli WANG. Two-dimensional DOA estimation of unitary transformation matrix reconstruction based on L-shaped array[J]. Telecommunications Science, 2018, 34(7): 110-117.

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References 16

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阵元数	2D-MUSIC算法	增广矩阵束算法	本文算法
5	2.027 892	0.078 909	0.078 768
6	2.396 772	0.079 336	0.079 868
7	3.033 217	0.080 563	0.082 112
8	3.203 651	0.088 141	0.086 562
9	3.588 295	0.089 568	0.089 135
10	3.692 880	0.090 666	0.090 001
20	6.114 345	0.102 475	0.140 633
30	8.572 638	0.163 838	0.397 243
40	10.016 099	0.394 133	1.325 503
50	16.969 983	0.915 499	4.474 533

Two-dimensional DOA estimation of unitary transformation matrix reconstruction based on L-shaped array

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