吉林大学学报(地球科学版) ›› 2017, Vol. 47 ›› Issue (4): 1308-1318.doi: 10.13278/j.cnki.jjuese.201704306

• 地球探测与信息技术 • 上一篇    下一篇

基于DOA估计的阵列式探地雷达逆向投影目标成像方法

曾昭发1, 李文奔1, 习建军1,2, 黄玲3, 王者江1   

  1. 1. 吉林大学地球探测科学与技术学院, 长春 130026;
    2. 河北省电力勘测设计研究院, 石家庄 050031;
    3. 中国科学院电子学研究所, 北京 100190
  • 收稿日期:2016-11-25 出版日期:2017-07-26 发布日期:2017-07-26
  • 通讯作者: 习建军(1982),男,博士研究生,工程师,主要从事工程物探及电力勘测工作,E-mail:tiantianhappy365@126.com E-mail:tiantianhappy365@126.com
  • 作者简介:曾昭发(1966),男,博士,教授,博士生导师,主要从事应用地球物理电磁法教学和研究工作,E-mail:zengzf@jlu.edu.cn
  • 基金资助:
    国家自然科学基金项目（40774055，41174097，41574097）；高等学校博士学科点专项科研基金项目（20130061110060）

Inverse Direction Imaging Method of Array Type GPR Based on DOA Estimation

Zeng Zhaofa1, Li Wenben1, Xi Jianjun1,2, Huang Ling3, Wang Zhejiang1   

  1. 1. College of GeoExploration Science and Technology, Jilin University, Changchun 130026, China;
    2. Hebei Electric Power Design ＆ Research Institute, Shijiazhuang 050031, China;
    3. Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2016-11-25 Online:2017-07-26 Published:2017-07-26
  • Supported by:
    Supported by the National Natural Science Foundation of China (40774055, 41174097, 41574097) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (20130061110060)

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摘要： 本文针对阵列式天线探地雷达系统的目标成像问题，理论模拟分析了最小二乘（LS）估计、Capon估计、幅度相位估计（APES）三种波束形成算法在目标回波到达角（direction of arrival，DOA）估计上的效果和精度，提出了基于DOA估计的阵列式探地雷达逆向投影目标成像方法。该方法综合利用多输入多输出（MIMO）阵列信号估计得到的目标回波信号DOA和阵列空间观测信息对目标体进行成像，通过成像点空间扫描对各测点估计DOA幅度值在成像点的加权积分进行目标定位及反射强度估计。该方法实现简单高效，可以广泛应用于地下简单目标体的快速成像。

关键词: 最小二乘, Capon估计, 幅度相位估计, DOA估计, 目标成像, 探地雷达

Abstract: Taking the target imaging of array type ground penetrating radar system as the topic, the authors analyzed the effect and accuracy of the estimation for target echo arrival upon direction of arrival (DOA) in theoretical modeling with three beam forming algorithms, i.e., least square (LS), Capon algorithm and amplitude phase estimation (APES), and put forward a method of array type GPR target imaging based on DOA estimation. This method images the target by integrating the target echo arrival signal estimated from multiple-input-multiple-output(MIMO)array signals with the spatial information obtained from multiple array observations, and localizes target and estimates reflection intensity by the imaging points weighted integral based on the DOA amplitude value estimated from each point by way of imaging points spatial scanning. This method is simple and efficient, and can be used widely in the rapid imaging of simple underground targets.

Key words: least squares (LS), Capon algorithm, amplitude and phase estimation (APES), DOA estimation, target imaging, ground penetrating radar(GPR)

中图分类号: 

  • P631.3
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