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Eliminating above-surface diffractions from ground-penetrating radar data using iterative Stolt migration

文献类型：期刊论文

作者Li, Chao1,2,3; Lin, Yi1,2,3; Lv, Wenmin1,2,3; Zhang, Jinhai1,2
刊名GEOPHYSICS
出版日期2021
卷号86期号:1页码:H1-H11
ISSN号0016-8033
DOI10.1190/GEO2019-0796.1
英文摘要Above-surface diffractions (ASDs) received by unshielded ground-penetrating radar (GPR) antennas are known to contaminate subsurface reflections and diffractions. Existing ASD-removal methods either leave relatively strong residual ASDs within subsurface reflections or attenuate them excessively. We have developed an iterative migration-based ASD-removal method to address this issue that separates ASDs from subsurface reflections via surgical mute. First, we isolate ASDs within the GPR profile using an optimal window function, generated using the focal center of ASDs within the migrated domain. The remainder signifies the zeroth-order separation of subsurface reflections. Second, we perform Stolt migration on the isolated ASDs using the speed of light in air. Then, we mute out the regions dominated by ASDs from the migration results, characterized by highly focused ASDs that are well separated from the majority of subsurface reflections. Following that, we demigrate the separated ASDs and subsurface reflections back to the unmigrated domain using the speed of light in air. Next, we combine the demigrated subsurface reflections with the zeroth-order subsurface reflections, thereby completing the first iteration of the separation process. The entire aforementioned process is then repeated twice on the residual data to obtain further residual subsurface reflections from ASDs, using a lower velocity and a higher velocity in sequence. Our method is verified to suppress ASDs more effectively than existing approaches by retaining a greater proportion of subsurface reflections, and its residual error is negligible. It is robust with respect to energy levels, window widths of ASDs, and clustered ASDs.
WOS关键词ONBOARD
资助项目National Natural Science Foundation of China[41941002]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000620734600003
出版者SOC EXPLORATION GEOPHYSICISTS
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/101009]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Zhang, Jinhai
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100049, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Li, Chao,Lin, Yi,Lv, Wenmin,et al. Eliminating above-surface diffractions from ground-penetrating radar data using iterative Stolt migration[J]. GEOPHYSICS,2021,86(1):H1-H11.
APA Li, Chao,Lin, Yi,Lv, Wenmin,&Zhang, Jinhai.(2021).Eliminating above-surface diffractions from ground-penetrating radar data using iterative Stolt migration.GEOPHYSICS,86(1),H1-H11.
MLA Li, Chao,et al."Eliminating above-surface diffractions from ground-penetrating radar data using iterative Stolt migration".GEOPHYSICS 86.1(2021):H1-H11.

入库方式： OAI收割

来源：地质与地球物理研究所

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