Highly Efficient Cmp Surveying with Ground-Penetrating Radar Utilising Real-Time Kinematic Gps

Kyosuke Onishi; Toshiyuki Yokota; Satoshi Maekawa; Tetsuma Toshioka; Shuichi Rokugawa

doi:10.1071/EG05059

ISSN: 0812-3985
E-ISSN: 1834-7533

Highly Efficient Cmp Surveying with Ground-Penetrating Radar Utilising Real-Time Kinematic Gps
Authors Kyosuke Onishi^a, Toshiyuki Yokota^b, Satoshi Maekawa^c, Tetsuma Toshioka^c and Shuichi Rokugawa^c
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^a Department of Geosystem Engineering, the University of Tokyo, 7-3-1 Hongo, , Bunkyo-ku, , Tokyo, 113-8656, , Japan, Phone: +81-3-5841-7036, Facsimile: +81-3-5841-7036, Email: [email protected] ^b Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST) ^c OYO Corporation Tsukuba Technical Research and Development Center
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 36, Issue 1, Mar 2005, p. 59 - 66
DOI: https://doi.org/10.1071/EG05059
- Received: 08 Aug 2004
- Accepted: 24 Nov 2003
- Published online: 01 Mar 2005

Abstract

The main purpose of this paper is to describe a highly efficient common mid-point (CMP) data acquisition method for groundpenetrating radar (GPR) surveying, which is intended to widen the application of GPR. The most important innovation to increase the efficiency of CMP data acquisition is continuous monitoring of the GPR antenna positions, using a real-time kinematic Global Positioning System (RTK-GPS). Survey time efficiency is improved because the automatic antenna locating system that we propose frees us from the most time-consuming process – deployment of the antenna at specified positions. Numerical experiments predicted that the data density and the CMP fold would be increased by the increased efficiency of data acquisition, which results in improved signal-to-noise ratios in the resulting data.

A field experiment confirmed this hypothesis. The proposed method makes GPR surveys using CMP method more practical and popular. Furthermore, the method has the potential to supply detailed groundwater information. This is because we can convert the spatially dense dielectric constant distribution, obtained by using the CMP method we describe, into a dense physical value distribution that is closely related to such groundwater properties as water saturation.

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References

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Article Type: Research Article

Keyword(s): common mid-point; global positioning systems; ground-penetrating radar; real-time kinematics

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Highly Efficient Cmp Surveying with Ground-Penetrating Radar Utilising Real-Time Kinematic Gps

Abstract

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