Amplitude-compensated Laplacian filtering of reverse time migration and its application
文献类型：期刊论文
| 作者 | Yang, Renhu1; Chang, Xu3; Ling, Yun2; Feng, Ye E.4; Qu, Lijian1 |
| 刊名 | GEOPHYSICAL PROSPECTING
 |
| 出版日期 | 2020-01-21 |
| 页码 | 8 |
| 关键词 | Amplitude-compensated Laplacian filtering Low-frequency noise Reverse time migration |
| ISSN号 | 0016-8025 |
| DOI | 10.1111/1365-2478.12881 |
| 英文摘要 | Reverse time migration is an advanced seismic migration imaging method. When the source wavefield and the receiver wavefield are cross-correlated, the cross-correlations of direct arrivals, backscattered waves and overturned waves will produce a lot of low-frequency noise, which will mask the final imaging results. Laplacian filtering, as a common method to suppress low-frequency noise, can adapt to any complex media, just adding a little computational cost. However, simple direct Laplacian filtering will destroy the characteristics of the useful signals. Therefore, the amplitude needs to be compensated before filtering when using the Laplacian filtering method. Zhang and Sun proposed an improved Laplacian filtering method and gave a simple calculation formula and explanation. This method can effectively suppress the low-frequency noise in reverse time migration while retaining the useful signal characteristics, but lacks detailed and strict mathematical derivation. Therefore, this paper gives a detailed and rigorous mathematical derivation of the amplitude-compensated Laplace filtering method from the point of view of amplitude-preserved filtering. The source wavelet is used instead of the source wavefield to compensate amplitude, just adding a little calculation cost. Finally, the amplitude-compensated Laplace filtering method is verified by two theoretical models and compared with the direct Laplacian filtering method. |
| 资助项目 | Fundamental Research Funds for the Central Universities[ZY20180239] ; National Natural Science Foundation of China[41974156] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000508221500001 |
| 出版者 | WILEY |
| 资助机构 | Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95897]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Yang, Renhu |
| 作者单位 | 1.China Inst Disaster Prevent, Hebei Key Lab Earthquake Dynam, Sanhe, Peoples R China 2.China Natl Petr Corp, Bur Geophys Prospecting, Zhuozhou, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 4.Tel Aviv Univ, Tel Aviv, Israel |
| 推荐引用方式 GB/T 7714 | Yang, Renhu,Chang, Xu,Ling, Yun,et al. Amplitude-compensated Laplacian filtering of reverse time migration and its application[J]. GEOPHYSICAL PROSPECTING,2020:8. |
| APA | Yang, Renhu,Chang, Xu,Ling, Yun,Feng, Ye E.,&Qu, Lijian.(2020).Amplitude-compensated Laplacian filtering of reverse time migration and its application.GEOPHYSICAL PROSPECTING,8. |
| MLA | Yang, Renhu,et al."Amplitude-compensated Laplacian filtering of reverse time migration and its application".GEOPHYSICAL PROSPECTING (2020):8. |
入库方式： OAI收割
来源：地质与地球物理研究所
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