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Subsurface Reconstruction From GPR Data by 1-D DBIM and RTM in Frequency Domain

机译:1-D DBIM和频域中RTM从GPR数据的地下重建

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摘要

This letter presents the joint reconstruction of unknown subsurface structures by the full-wave inversion (FWI) and reverse time migration (RTM) imaging. In the FWI, the 1-D distorted Born iteration method (DBIM) is employed to retrieve the dielectric parameters of the layered subsurface medium by minimizing the difference between measured fields and calculated fields via Frechet derivatives. Based on the inversion results, the RTM is directly performed in the frequency domain to image the buried objects using the ground-penetrating radar (GPR) data. Numerical and laboratory experiments show that the proposed joint method can be used to reconstruct the subsurface structures reliably and efficiently.
机译:这封信通过全波反转(FWI)和相反时间迁移(RTM)成像来介绍未知地下结构的联合重建。在FWI中,采用1-D失真的出生方法(DBIM)来通过最小化通过Frechet衍生物最小化测量的字段和计算的字段的差异来检索分层地下介质的介电参数。基于反演结果,RTM直接在频域中执行,以使用地面穿透雷达(GPR)数据来映射埋地对象。数值和实验室实验表明,所提出的联合方法可用于可靠且有效地重建地下结构。

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