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 Fréchet 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.

中文翻译：

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在频域中通过一维 DBIM 和 RTM 从 GPR 数据重建地下

这封信介绍了通过全波反演 (FWI) 和逆时偏移 (RTM) 成像联合重建未知地下结构。在 FWI 中，通过 Fréchet 导数最小化测量场和计算场之间的差异，采用一维失真波恩迭代法 (DBIM) 来检索分层地下介质的介电参数。基于反演结果，直接在频域中执行 RTM 以使用探地雷达 (GPR) 数据对埋藏物体进行成像。数值和实验室实验表明，所提出的联合方法可以可靠有效地重建地下结构。