吉林大学学报(地球科学版) ›› 2018, Vol. 48 ›› Issue (2): 402-410.doi: 10.13278/j.cnki.jjuese.20170268

• 地球物理数据处理与解释技术 • 上一篇    下一篇

基于改进残差法的定向钻孔雷达三维成像算法

王文天, 刘四新, 鹿琪, 李宏卿, 傅磊   

  1. 吉林大学地球探测科学与技术学院, 长春 130026
  • 收稿日期:2017-09-07 出版日期:2018-03-26 发布日期:2018-03-26
  • 通讯作者: 刘四新(1966-),男,教授,博士生导师,主要从事探地雷达、钻孔雷达及电磁波测井的方法理论研究,E-mail:liusixin@jlu.edu.cn E-mail:liusixin@jlu.edu.cn
  • 作者简介:王文天(1990-),男,博士研究生,主要从事探地雷达、定向钻孔雷达及雷达测井软件等的理论和应用方面的研究,E-mail:wangwentianjlu@163.com
  • 基金资助:
    国家重点研发计划项目（2016YFC0600505）；国家自然科学基金项目（41574109）；中国博士后科学基金项目（801151010423）

3D Imaging Algorithm of Directional Borehole Radar Based on Improved Residual Method

Wang Wentian, Liu Sixin, Lu Qi, Li Hongqing, Fu Lei   

  1. College of GeoExploration Sciences and Technology, Jilin University, Changchun 130026, China
  • Received:2017-09-07 Online:2018-03-26 Published:2018-03-26
  • Supported by:
    Supported by National Key Research and Development Program of China(2016YFC0600505), National Natural Science Foundation of China (41574109) and Postdoctoral Science Foundation of China(801151010423)

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摘要： 钻孔雷达是探地雷达的一种。传统的钻孔雷达可以确定目标地质体的深度，却无法判定目标地质体的精确方位；定向钻孔雷达不仅可以确定目标地质体的深度，还可以精确地确定目标地质体的方位。本文研究的定向钻孔雷达包括1个发射天线和4个接收天线。本研究通过增加移动窗口，进行窗口内的方位识别计算来实现残差法的改进。传统的残差法只能对一个目标进行方位识别；改进后的残差法可对井眼周围任意多个目标进行方位识别，并且利用4个接收天线所接收到波形的不同来确定目标地质体的精确方位，并开发了三维成像算法。最终利用模型得到合成数据，求得方位角，结合方位角进行三维成像，三维成像结果中井眼的正东方向和正南方向都有一个明显的异常，与原模型吻合良好。

关键词: 探地雷达, 钻孔雷达, 残差法, 三维成像

Abstract: Borehole radar is a kind of ground penetrating radar (GPR). Conventional borehole radar can determine the depth of the geological body, but it's unable to determine the azimuth of geological target precisely. Directional borehole radar can determine not only the depth of the geological body, but also the orientation of the geologic body. In this paper, the directional borehole radar, consisting of one transmitting antenna and four receiving antennas, is applied to determine the positions of several targets by the modified residual algorithm through adding moving windows to the traditional residual algorithm. A three dimensional imaging method is discussed in this paper too. We used the model of synthetic data obtained with azimuth angle to realize 3D imaging, and 3D imaging results in the east and south direction of the well showed an obvious anomaly, which is in good agreement with the original model.

Key words: ground penetrating radar(GPR), borehole radar, residual algorithm, three dimensional imaging algorithm

中图分类号: 

  • P631
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