Least-Squares Reverse Time Migration Using the Gradient Preconditioning Based on Transmitted Wave Energy
A gradient preconditioning approach based on transmitted wave energy for least-squares reverse time migration (LSRTM) is proposed in this study. The gradient is preconditioned by using the energy of “approximate transmission wavefield,” which is calculated based on the non-reflecting acoustic equati...
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Frontiers Media S.A.
2021
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oai:doaj.org-article:49429a1fe7c948b8afedaaf832776c942021-12-01T12:59:10ZLeast-Squares Reverse Time Migration Using the Gradient Preconditioning Based on Transmitted Wave Energy2296-646310.3389/feart.2021.732425https://doaj.org/article/49429a1fe7c948b8afedaaf832776c942021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/feart.2021.732425/fullhttps://doaj.org/toc/2296-6463A gradient preconditioning approach based on transmitted wave energy for least-squares reverse time migration (LSRTM) is proposed in this study. The gradient is preconditioned by using the energy of “approximate transmission wavefield,” which is calculated based on the non-reflecting acoustic equation. The proposed method can effectively avoid a huge amount of calculation and storage required by the Hessian matrix or approximated Hessian matrix and can overcome the influence of reflected waves, multiples, and other wavefields on the gradient in gradient preconditioning based on seismic wave energy (GPSWE). The numerical experiments, compared with that using GPSWE, show that LSRTM using the gradient preconditioning based on transmitted wave energy (GPTWE) can significantly improve the imaging accuracy of deep target and accelerate the convergence rate without trivial increased calculation.Chuang XiePeng SongPeng SongPeng SongXishuang LiXishuang LiJun TanJun TanJun TanShaowen WangBo ZhaoBo ZhaoBo ZhaoFrontiers Media S.A.articleleast-squares reverse time migrationgradient preconditioningtransmitted wavenon-reflecting acoustic wave equationdisproportioned illuminationScienceQENFrontiers in Earth Science, Vol 9 (2021) |
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least-squares reverse time migration gradient preconditioning transmitted wave non-reflecting acoustic wave equation disproportioned illumination Science Q |
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least-squares reverse time migration gradient preconditioning transmitted wave non-reflecting acoustic wave equation disproportioned illumination Science Q Chuang Xie Peng Song Peng Song Peng Song Xishuang Li Xishuang Li Jun Tan Jun Tan Jun Tan Shaowen Wang Bo Zhao Bo Zhao Bo Zhao Least-Squares Reverse Time Migration Using the Gradient Preconditioning Based on Transmitted Wave Energy |
| description |
A gradient preconditioning approach based on transmitted wave energy for least-squares reverse time migration (LSRTM) is proposed in this study. The gradient is preconditioned by using the energy of “approximate transmission wavefield,” which is calculated based on the non-reflecting acoustic equation. The proposed method can effectively avoid a huge amount of calculation and storage required by the Hessian matrix or approximated Hessian matrix and can overcome the influence of reflected waves, multiples, and other wavefields on the gradient in gradient preconditioning based on seismic wave energy (GPSWE). The numerical experiments, compared with that using GPSWE, show that LSRTM using the gradient preconditioning based on transmitted wave energy (GPTWE) can significantly improve the imaging accuracy of deep target and accelerate the convergence rate without trivial increased calculation. |
| format |
article |
| author |
Chuang Xie Peng Song Peng Song Peng Song Xishuang Li Xishuang Li Jun Tan Jun Tan Jun Tan Shaowen Wang Bo Zhao Bo Zhao Bo Zhao |
| author_facet |
Chuang Xie Peng Song Peng Song Peng Song Xishuang Li Xishuang Li Jun Tan Jun Tan Jun Tan Shaowen Wang Bo Zhao Bo Zhao Bo Zhao |
| author_sort |
Chuang Xie |
| title |
Least-Squares Reverse Time Migration Using the Gradient Preconditioning Based on Transmitted Wave Energy |
| title_short |
Least-Squares Reverse Time Migration Using the Gradient Preconditioning Based on Transmitted Wave Energy |
| title_full |
Least-Squares Reverse Time Migration Using the Gradient Preconditioning Based on Transmitted Wave Energy |
| title_fullStr |
Least-Squares Reverse Time Migration Using the Gradient Preconditioning Based on Transmitted Wave Energy |
| title_full_unstemmed |
Least-Squares Reverse Time Migration Using the Gradient Preconditioning Based on Transmitted Wave Energy |
| title_sort |
least-squares reverse time migration using the gradient preconditioning based on transmitted wave energy |
| publisher |
Frontiers Media S.A. |
| publishDate |
2021 |
| url |
https://doaj.org/article/49429a1fe7c948b8afedaaf832776c94 |
| work_keys_str_mv |
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