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• W2320178171 abstract "PreviousNext No AccessBeijing 2014 International Geophysical Conference & Exposition, Beijing, China, 21-24 April 2014An effective tomography algorithm with Gaussian beamAuthors: Li HuiWang HuazhongLi HuiWave Phenomena and Inversion Imaging (WPI), School of Ocean and Earth Science, Tongji University, Shanghai, 200092, ChinaSearch for more papers by this author and Wang HuazhongWave Phenomena and Inversion Imaging (WPI), School of Ocean and Earth Science, Tongji University, Shanghai, 200092, ChinaSearch for more papers by this authorhttps://doi.org/10.1190/IGCBeijing2014-179 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Ray-based tomography is a much more ill-posed inverse problem than wave equation-based inversion, while the ray method boasts less computation. Compared to these two methods, Gaussian beam tomography can be identified as a compromise with less ill-posed than ray-based tomography and less computation than wave-equation-based tomography. Here we present a Gaussian beam tomography (GBT) approach in which each row of Fréchet matrix becomes a beam body. Instead, the kernel of conventional ray tomography is just a ray. Specifically, GBT is a more stable algorithm which calls for less regularization than traditional ray tomography. We test GBT with a synthetic data by MVA (Migration velocity analysis), and get a promising result without any regularization. Keywords: tomography, migration, velocityPermalink: https://doi.org/10.1190/IGCBeijing2014-179FiguresReferencesRelatedDetails Beijing 2014 International Geophysical Conference & Exposition, Beijing, China, 21-24 April 2014ISSN (online):2159-6832Copyright: 2014 Pages: 1360 publication data© 2014 Published in electronic format with permission by the Society of Exploration Geophysicists and Chinese Petroleum SocietyPublisher:Society of Exploration Geophysicists HistoryPublished: 24 Apr 2014 CITATION INFORMATION Li Hui and Wang Huazhong, (2014), An effective tomography algorithm with Gaussian beam, SEG Global Meeting Abstracts : 701-704. https://doi.org/10.1190/IGCBeijing2014-179 Plain-Language Summary KeywordstomographymigrationvelocityPDF DownloadLoading ..." @default.
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• W2320178171 title "An effective tomography algorithm with Gaussian beam" @default.
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