基于L型阵列酉变换矩阵重构的二维DOA估计

王秀; 常青; 王耀力

doi:10.11959/j.issn.1000-0801.2018208

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基于L型阵列酉变换矩阵重构的二维DOA估计

研究与开发 | 更新时间：2024-06-05

- 基于L型阵列酉变换矩阵重构的二维DOA估计
- Two-dimensional DOA estimation of unitary transformation matrix reconstruction based on L-shaped array
- 电信科学 2018年34卷第7期页码：110-117
- 作者机构：
- 作者简介：
  
  [ "王秀（1993-），女，太原理工大学硕士生，主要研究方向为传感器阵列信号处理。" ]
  [ "常青（1975-），男，博士，太原理工大学副教授、硕士生导师，主要研究方向为嵌入式个人/家庭服务器、嵌入式系统等。" ]
  [ "王耀力（1965-），男，博士，太原理工大学副教授、硕士生导师，主要研究方向为人机视觉分析与处理、嵌入式系统电路设计理论等。" ]
- 基金信息：
- DOI：10.11959/j.issn.1000-0801.2018208
  中图分类号： TN911.7
- 网络出版日期：2018-07，
  
  纸质出版日期：2018-07-20
- 稿件说明：
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王秀, 常青, 王耀力. 基于L型阵列酉变换矩阵重构的二维DOA估计[J]. 电信科学, 2018,34(7):110-117.

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.
王秀, 常青, 王耀力. 基于L型阵列酉变换矩阵重构的二维DOA估计[J]. 电信科学, 2018,34(7):110-117. DOI： 10.11959/j.issn.1000-0801.2018208.

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. DOI： 10.11959/j.issn.1000-0801.2018208.

摘要

二维空间信号波达方向（DOA）的估计是阵列信号处理的一个关键研究问题。经典的二维 MUSIC算法固然精度高，但此算法需要二维谱峰搜索，运算较为复杂。提出一种用于L型阵列的二维DOA估计算法，通过矩阵重构使得阵列输出矩阵变为中心对称矩阵，再利用酉变换矩阵将其由复值矩阵变为实值矩阵。该方法可以直接得到目标参数，不需要谱峰搜索，使得运算量大大降低。相比于 L 型阵列适用的增广矩阵束（MEMP）算法，该算法可以估计更多信源的DOA，并能获得较高的分辨率。计算机仿真结果表明，该算法具有较高的DOA估计精度。

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.

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references

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