Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Juefu Wang"'
Publikováno v:
GEOPHYSICS. 75:WB225-WB234
We propose a greedy inversion method for a spatially localized, high-resolution Radon transform. The kernel of the method is based on a conventional iterative algorithm, conjugate gradient (CG), but is utilized adaptively in amplitude-prioritized loc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::358977c74ba10c1caceb606ff3098357
https://doi.org/10.1190/1.3484195
https://doi.org/10.1190/1.3484195
Autor:
Mauricio D. Sacchi, Juefu Wang
Publikováno v:
GEOPHYSICS. 72:S11-S18
We propose a new scheme for high-resolution amplitude-variation-with-ray-parameter (AVP) imaging that uses nonquadratic regularization. We pose migration as an inverse problem and propose a cost function that uses a priori information about common-im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::304d6c50fc111f8c3a87ebc8f6184f36
https://doi.org/10.1190/1.2387139
https://doi.org/10.1190/1.2387139
Publikováno v:
GEOPHYSICS. 70:S91-S99
This paper presents a 3D least-squares wave-equation migration method that yields regularized common-image gathers (CIGs) for amplitude-versus-angle (AVA) analysis. In least-squares migration, we pose seismic imaging as a linear inverse problem; this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93f6a6ad20c06484590eadb42765747f
https://doi.org/10.1190/1.2076748
https://doi.org/10.1190/1.2076748
Autor:
Shaowu Wang, Juefu Wang
Publikováno v:
SEG Technical Program Expanded Abstracts 2014.
Five-dimensional (5D) interpolation/regularization has been routinely used for conventional P-wave (PP) pre-stack time/depth migration (PSTM/PSDM) in the common offset vector (COV) domain, particularly for merged surveys. Because the pre-stack joint
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12598a3fafc41d756da919e28801081c
https://doi.org/10.1190/segam2014-0856.1
https://doi.org/10.1190/segam2014-0856.1
Autor:
Juefu Wang, Shaowu Wang
Publikováno v:
SEG Technical Program Expanded Abstracts 2014.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe1961ced4ce4676ce346fe45aab97d5
https://doi.org/10.1190/segam2014-0188.1
https://doi.org/10.1190/segam2014-0188.1
Autor:
Juefu Wang, Shaowu Wang
Publikováno v:
SEG Technical Program Expanded Abstracts 2013.
Summary Land data is usually noisier and spatially sparser than marine data, which hampers the application of data-driven multiple attenuation methods. In this paper, we present a practical implementation of the Surface Related Multiple Elimination (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40f20192e2675de68c824e18e8ca257a
https://doi.org/10.1190/segam2013-0390.1
https://doi.org/10.1190/segam2013-0390.1
Autor:
Shaowu Wang, Juefu Wang
Publikováno v:
SEG Technical Program Expanded Abstracts 2013.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62e21126b4b7cf4cc3106a2850ad111c
https://doi.org/10.1190/segam2013-0388.1
https://doi.org/10.1190/segam2013-0388.1
Autor:
Dave Ganley, Mike Perz, Muyi Kola-Ojo, Dennis Quinn, Juefu Wang, Angela Truong, Dan Negut, David Emery
Publikováno v:
SEG Technical Program Expanded Abstracts 2011.
Two different prestack interpolation methods, 5D interpolation by Fourier reconstruction and dip-scan-based data synthesis, are contrasted and compared on both synthetic data and also on a sparsely acquired and heavily structured 3D land real data se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f32350aa479b50455f9fa11bc63a46d
https://doi.org/10.1190/1.3627834
https://doi.org/10.1190/1.3627834
Publikováno v:
SEG Technical Program Expanded Abstracts 2009.
SUMMARY We propose a greedy inversion method for sparse linear problems. The kernel of the method is based on a conventional iterative algorithm, conjugate gradients (CG), but it is utilized adaptively in amplitude-prioritized local model spaces, giv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92e87314d4ce0d6d7db0a8e499782cee
https://doi.org/10.1190/1.3255506
https://doi.org/10.1190/1.3255506
Publikováno v:
SEG Technical Program Expanded Abstracts 2009.
Summary We compare two different approaches to input data regularization for azimuth-limited Kirchhoff prestack migration, namely azimuth sectoring and prestack interpolation via band-limited Fourier reconstruction. We evaluate the performance of bot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d8d27f01fd04fa3accda2781c3c1044
https://doi.org/10.1190/1.3255059
https://doi.org/10.1190/1.3255059