Time-Domain GPR Signal Prediction by Using Time-Domain UTD Method

2020 17th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON) Pub Date : 2020-06-01 DOI:10.1109/ecti-con49241.2020.9158252

K. Phaebua, A. Boonpoonga, S. Burintramart

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Abstract

This paper proposes a study of a time-domain ground penetrating radar (GPR) signal by using the time- domain uniform geometrical theory of diffraction (UTD) method. The monostatic GPR system is employed in this study. Rays tracing method is employed to find the reflected ray and diffracted ray paths between the transmitting antenna (Tx) and the receiving antenna (Rx). Moreover, the conventional UTD method is adapted to calculate the frequency-domain transfer function of the electric field between Tx antenna and the Rx antenna. The medium including air, ground and underground objects are taken into account. Finally, the received time-domain GPR signal is obtained by using the inverse fast Fourier transform (iFFT) method. The calculated results found that the time-domain GPR signal can be calculated by using the time-domain UTD method. The ground reflection, object reflection and object diffraction time-domain signal can be separately calculated. The reflected signal from the ground and an underground curved object can be illustrated.

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基于时域UTD方法的时域探地雷达信号预测

本文利用时域均匀几何衍射理论(UTD)方法对探地雷达(GPR)时域信号进行了研究。本研究采用单站探地雷达系统。采用射线追踪法，求出发射天线(Tx)与接收天线(Rx)之间的反射射线和衍射射线路径。此外，采用传统的UTD方法计算了Tx天线与Rx天线之间电场的频域传递函数。介质包括空气、地面和地下物体。最后，利用快速傅里叶反变换(iFFT)方法得到接收到的时域GPR信号。计算结果表明，利用时域UTD方法可以计算时域探地雷达信号。地面反射、物体反射和物体衍射时域信号可以分别计算。反射信号从地面和地下弯曲物体可以说明。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2020 17th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)

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