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应用科学学报 ›› 2010, Vol. 28 ›› Issue (6): 628-632.doi: 10.3969/j.issn.0255-8297.2010.06.012

• 信号与信息处理 • 上一篇    下一篇

特殊阵列的二维到达角方向估计

赵大勇1;2， 刁鸣1， 吴小强1   

  1. 1. 哈尔滨工程大学信息与通信工程学院，哈尔滨150001
    2. 空军通信导航与指挥自动化研究所，北京100085
  • 收稿日期:2010-06-07 修回日期:2010-09-12 出版日期:2010-11-26 发布日期:2010-11-25
  • 作者简介:赵大勇，博士生，研究方向：电子对抗技术、通信信号处理，E-mail：Zdy407@126.com；刁鸣，教授，博导，研究方向：宽带信号检测、处理与识别，E-mail: diaoming@hrbeu.edu.cn
  • 基金资助:

    国防科研基础基金(No. K1503060217)资助

Two-Dimensional Direction-of-Arrival Estimation Based on Special Array

ZHAO Da-yong1;2, DIAO Ming1, WU Xiao-qiang1   

  1. 1. College of Information and Communication Engineering, Harbin Engineering University,
    Harbin 150001, China
    2. Communication navigation and Command Automation Institution Equipment Academy of Air Force,
    Beijing 100085, China
  • Received:2010-06-07 Revised:2010-09-12 Online:2010-11-26 Published:2010-11-25

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1511

被引次数

4

摘要：

在特殊均匀线阵的基础上，提出一种二维DOA估计新方法，利用参考阵列的旋转不变性构造整个虚拟阵列的旋转不变性，采用横向和纵向双重扩展提高了阵列的扩展性能，并实现四阶累积量矩阵的无冗余数据处理. 新方法只需计算两个四阶累积量矩阵就可获得信号子空间的估计，进而利用二维ESPRIT方法求得最终的解. 理论分析和仿真实验表明，该算法计算量低，阵列扩展能力强，估计精度高，具有一定的实用性.

关键词: 四阶累积量, ESPRIT算法, 阵列扩展, 二维DOA估计

Abstract:

A new method for estimating two-dimensional direction-of-arrival based on a special linear array is presented. Rotational invariance of the virtual array can be obtained from rotational invariance of the reference array using the method of two-direction expansion, which improves the array’s expansion ability and eliminate redundant data of the forth-order cumulant matrix. Using the new method, the signal subspace can be estimated from only two forth-order cumulant matrices. DOA estimation can be achieved by the 2D ESPRIT method. The theoretical analysis and simulation results show that this method has low computation cost, excellent expansion ability, high estimation precision, and good practicality.

Key words: forth-order cumulant, ESPRIT algorithm, array extension, 2D DOA estimation

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