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应用科学学报 ›› 2006, Vol. 24 ›› Issue (2): 199-202.

• 论文 • 上一篇    下一篇

用T形天线进行近场辐射源定位的一种新方法

单志勇1,2, 周希朗2, 牛家晓2   

  1. 1. 东华大学通信与电子工程系, 上海 200051;
    2. 上海交通大学电子工程系, 上海 200030
  • 收稿日期:2004-11-19 修回日期:2005-05-23 出版日期:2006-03-31 发布日期:2006-03-31
  • 作者简介:单志勇,博士,研究方向:智能天线,E-mail:zyshan720914@163.com;周希朗,教授,博导,研究方向:智能天线、电磁兼容;牛家晓,教授,博士,研究方向:智能天线.
  • 基金资助:
    国防预研基金资助项目

A Novel Algorithm for Localizing Near-Field Source Using Uniform T-Shaped Linear Array

SHAN Zhi-yong1,2, ZHOU Xi-lang2, NIU Jia-xiao2   

  1. 1. Department of Communication and Electronic Engineering, Donghua University, Shanghai 200051, China;
    2. Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200030, China
  • Received:2004-11-19 Revised:2005-05-23 Online:2006-03-31 Published:2006-03-31

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摘要： 提出了基于T形阵列近场辐射源定位的一种新方法.首先假定辐射源为远场源,利用两个水平子阵列及近场与远场源的关系确定近场辐射源的距离和入射角,由垂直子阵列确定另一个入射角,再由两个入射角即可确定近场辐射源的仰角与方位角(距离已经确定),得到近场位置坐标;最后在该位置附近采用3D-MUSIC算法进行局部搜索,得到最佳结果.仿真结果表明,该方法在获得精确定位结果的同时,大大缩短了计算时间,有效地提高了定位的实时性.

关键词: 远场, 子阵列, 近场, 入射角

Abstract: A novel algorithm based on a T-shaped array for location of near-field source is presented.Under the far-field assumption of the actual near-field, equations for the bearings of far-field and the range and bearing of the near-field source are derived from two horizontal subarrays.The range and bearing of the near-field are obtained, and the bearing of another subarray determined.The azimuth and elevation of the near-field source can be determined from two bearings. The location of the near-field can then be estimated.More accurate results can be obtained by a local search.Simulation results show that the algorithm is accurate, effective and suitable for real-time applications.

Key words: subarray, near field, far field, bearings

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