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Abstract

Ground penetrating radar method (GPR) is common place in imaging buried objects, such as: supply water and drainage systems, electric and telecom cables. For shallow geology, GPR method has provided high-resolution sections containing subsurface information. In processing data, the velocity of GPR wave is the most important parameter. It helps to exactly specify the structure of a geology sections. Defining a wrong velocity may lead to an erroneous result. In this research, we are going to present two processing steps to define the electromagnetic wave velocity and the position of object from GPR data that was acquired by using a shield antenna machine prototype. The first step is application of Kirchhoff migration and energy difference graphs to calculate the electromagnetic wave velocity. In the second step, the result of migrated sections consisting of hyperbole diffraction was evaluated. If migrated using the right velocity, the diffracted hyperbola will focus on its peak and have the maximum energy. Finally, we used the workflow to define the velocity, the position and the size of the object from real GPR data collected at Go Vap district, Ho Chi Minh City, Vietnam.



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Article Details

Issue: Vol 5 No 1 (2021): Under Publishing
Page No.: Online first
Published: Dec 27, 2020
Section: Original Research
DOI: https://doi.org/10.32508/stdjns.v5i1.923

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Creative Commons License

Copyright: The Authors. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 4.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 How to Cite
Nguyen, T., & Le, C. (2020). Energy Difference Of High Frequency Electromagnetic Waves Amplitude In Detecting Buried Objects At Ho Chi Minh City, Vietnam. Science and Technology Development Journal - Natural Sciences, 5(1), Online first. https://doi.org/https://doi.org/10.32508/stdjns.v5i1.923

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