基于gprMax的探地雷达逆时偏移方法

2022 International Applied Computational Electromagnetics Society Symposium (ACES-China) Pub Date : 2022-12-09 DOI:10.1109/ACES-China56081.2022.10064751

Jianrong Geng, Hongxia Ye

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引用次数: 0

摘要

逆时偏移(RTM)技术由于不受地层结构和岩性变化的影响，在复杂构造地震成像测量中得到了广泛应用。本文将其扩展到未知地下探测场景的探地雷达成像。利用基于时域有限差分法(FDTD)的gprMax工具计算电磁波场的正向和反向外推，并基于爆炸反射器原理的零时成像条件实现二维和三维RTM。多个二维和三维仿真实验表明，RTM算法可以非常准确地恢复地下结构的特征，即使地下结构复杂，如多个埋藏目标或非平行层状结构。

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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Revers Time Migration Method of Ground Penetrating Radar Based on gprMax

Reverse time migration (RTM) technology has been widely used in seismic imaging measurement of complex structures because it is not affected by the changes of formation structure and lithology. This paper expanded it to the Ground penetrating radar (GPR) imaging of unknown subsurface detection scenes. The gprMax tool based on the finite difference time domain method (FDTD) is used to calculate the forward and backward extrapolation of the electromagnetic wave field, and the 2D and 3D RTM is realized based on the zero-time imaging condition of the explosion reflector principle. Multiple 2D and 3D simulation experiments show that the RTM algorithm can restore the characteristics of underground structures very accurately, even if the underground structure is complex, such as multiple buried target or nonparallel layered structure.

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2022 International Applied Computational Electromagnetics Society Symposium (ACES-China)

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