差分GPS实现探地雷达图像地形校正方法研究

李双飞; 李家存; 张迪

差分GPS实现探地雷达图像地形校正方法研究

李双飞^{1, 2,},
李家存^{1, 2, ,},
张迪³

1.
首都师范大学资源环境与旅游学院, 北京 100048
2.
资源环境与地理信息系统北京市重点实验室, 北京 100081
3.
河南工程学院, 郑州 451191

基金项目:

中国地质调查局地质调查项目 121201104000150010

中国地质调查局地质调查项目 12120114002101

详细信息

作者简介:
李双飞(1991-), 男, 硕士研究生, 主要从事探地雷达技术与地学应用研究。E-mail:lishuangfei_gis@163.com

通讯作者:
李家存(1974-), 男, 博士, 副教授, 从事遥感技术应用与研究。E-mail:lijiacun@163.com

中图分类号: P631.8
计量
- 文章访问数: 156
- HTML全文浏览量: 81
- PDF下载量: 5
- 被引次数: 0
出版历程
- 收稿日期: 2016-05-30
- 刊出日期: 2016-09-28

TOPOGRAPHIC CORRECTION OF GPR PROFILES BASED ON DIFFERENTIAL GPS

LI Shuang-fei^{1, 2
,},
LI Jia-cun^{1, 2
, ,},
ZHANG Di³

1.
College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
2.
Key Laboratory of 3-Dimensional Information Acquisition and Application, Ministry of Education, Beijing 100048, China
3.
Henan Institute of Engineering, Zhengzhou 451191, China

摘要

摘要: 针对在地形起伏较大的区域探地雷达获取的图像不能表达地形变化的缺点，通过探地雷达与差分GPS同步采集记录数据，实现探地雷达图像与GPS数据时间同步，选择某一标准水准面为参考面，根据时间位移和线性插值方法，将探地雷达数据进行时深转换，从而实现探地雷达地形校正。探地雷达图像地形校正前后对比表明此方法在保留地下介质体水平方向分布特征的同时，实现了探地雷达图像在垂直方向的精确校正，对地下目标的解译和精确定位有很大的帮助，对浅层活动断层探测具有一定的实际意义。
- 探地雷达 /
- GPR /
- 差分GPS /
- 地形校正 /
- 时深转换 /
- 时间位移
Abstract: As a new type of ground detection technology, Ground Penetrating Radar (GPR) has advantages of high resolution and fast survey and no damage in detection, especially in the exploration of shallow active fault. However, the result image of GPR is not consistent with the objective facts in undulated areas. This paper presents a new method to correct the topographic distortion of GPR image:GPR and GPS are combined to collect and record data at the same time, achieving time synchronization between the GPR data and GPS data. Specifically, through time shifting and linear interpolation method, taking a standard level for reference surface, converting the time-depth of GPR data, finally achieving topographic correction. Contrast the original GPR image and adjusted GPR image, it shows that the method can correctly express the distribution characteristics of underground medium, and it is helpful to interpret and position the underground target, especially in the shallow active fault detection program.
- ground penetrating radar /
- GPR /
- DGPS /
- topographic correction /
- time-depth conversion /
- time-displacement

HTML全文

图 1 探地雷达起伏地形采集数据

Figure 1. GPR data collected at rough terrains

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图 2 探地雷达地形校正前后二维剖面对比

Figure 2. The 2D profiles of original and adjusted GPR images

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图 3 探地雷达与差分GPS同步采集系统

Figure 3. GPR and DGPS data synchronous acquisition system

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图 4 探地雷达与差分GPS同步采集原理

Figure 4. The principle of synchronous acquisition

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图 5 差分GPS数据后处理流程

Figure 5. Post-processing DGPS data

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图 6 探地雷达数据后处理流程

Figure 6. The post-processing of GPR data

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图 7 探地雷达数据处理前后图像

Figure 7. The original and post-processing GPR images

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图 8 数据融合与地形校正

Figure 8. Data fusion and terrain correction

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图 9 地形校正前后探地雷达剖面图

Figure 9. The original and adjusted GPR images

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