西安电子科技大学学报

• 研究论文 • 上一篇    

一种强干扰条件下阵列天线波达方向估计方法

宫健1,2;楼顺天1;张伟涛1   

  1. (1. 西安电子科技大学 电子工程学院,陕西 西安 710071;
    2. 空军工程大学 防空反导学院,陕西 西安 710051)
  • 收稿日期:2017-03-03 出版日期:2018-02-20 发布日期:2018-03-23
  • 作者简介:宫健(1984-),男,讲师,西安电子科技大学博士研究生,E-mail:wcyls@163.com
  • 基金资助:

    国家自然科学基金资助项目(61571339, 61501501);航空科学基金资助项目(20150196003, 20150196007)

Method of array antenna DOA under strong interference presence

GONG Jian1,2;LOU Shuntian1;ZHANG Weitao1   

  1. (1. School of Electronic Engineering, Xidian Univ., Xi'an 710071, China;
    2. Air Force Engineering Univ., Xi'an 710051, China)
  • Received:2017-03-03 Online:2018-02-20 Published:2018-03-23

摘要:

为解决强干扰条件下阵列天线的波达方向估计问题,定义了保向正交性和特征波束的概念,证明了信源同时满足功率差和角度差较大条件时,所对应的特征矢量具有保向正交性,提出了一种基于干扰特征矢量剔除的波达方向估计算法.最后,通过计算机仿真,验证了所提算法在强干扰条件下比干扰阻塞算法有更高的估计性能.

关键词: 阵列天线, 电子干扰, 波达方向估计, 信号处理

Abstract:

In order to solve the problem of DOA estimation for the array antenna under strong interference,the concept of preserving orthogonality and characteristic beam is defined. It is proved theoretically that the characteristic vector of the corresponding feature vector is guaranteed when the source power and the angle interval are both large. And a novel DOA estimation algorithm based on the interference source feature vector is proposed. Through the simulation and comparison of JJM algorithm it is shown that the proposed algorithm has a better statistical estimation performance than the JJM algorithm.

Key words: array antenna, electronic interference, direction of arrival, signal processing

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