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2D efficient ray tracing with a modified shortest path method

文献类型：期刊论文

作者Zhang, Meigen1,2; Fu, Liyun2; Li, Xinfu3; Li, Xiaofan2
刊名EXPLORATION GEOPHYSICS
出版日期2009-12-01
卷号40期号:4页码:301-307
关键词shortest path method efficient ray tracing effective propagation direction
ISSN号0812-3985
DOI10.1071/EG09016
文献子类Article
英文摘要The computation effort of ray tracing with the shortest path method (SPM) is strongly dependent on the number of the discretized nodes in a model and the number of ray directions emanating from a secondary source node. In the traditional SPM, a secondary source emanates rays to all the surrounding nodes. Obviously, most of them are not minimal traveltime raypaths. As a result, the efficiency of SPM can be greatly improved if some measures are taken to avoid those unnecessary computations. In the current study, we apply the traveltime information of neighbouring nodes and the incident rays to determine the effective target propagation directions of secondary source nodes in 2D case. Generally, the effective propagation directions are narrow bands with few surrounding nodes. Thus, most unnecessary ray directions of secondary source nodes are avoided. 2D model tests show that the computational speed of the improved method is about several to tens of times of that of the traditional SPM with the increase of network nodes and cells.
WOS关键词FINITE-DIFFERENCE CALCULATION ; TRAVEL-TIME INTERPOLATION ; ANISOTROPIC MEDIA ; TREE ALGORITHM ; TOMOGRAPHY ; COMPUTATION ; PRINCIPLE ; MIGRATION ; EQUATION ; MODELS
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000272456100001
出版者CSIRO PUBLISHING
资助机构Key Laboratory of Engineering Geomechanics of Chinese Academy of Sciences ; Key Laboratory of Engineering Geomechanics of Chinese Academy of Sciences ; CNPC Innovation Fund ; CNPC Innovation Fund ; National Natural Science Foundation of China(40437018 ; National Natural Science Foundation of China(40437018 ; 40874024) ; 40874024) ; Key Laboratory of Engineering Geomechanics of Chinese Academy of Sciences ; Key Laboratory of Engineering Geomechanics of Chinese Academy of Sciences ; CNPC Innovation Fund ; CNPC Innovation Fund ; National Natural Science Foundation of China(40437018 ; National Natural Science Foundation of China(40437018 ; 40874024) ; 40874024) ; Key Laboratory of Engineering Geomechanics of Chinese Academy of Sciences ; Key Laboratory of Engineering Geomechanics of Chinese Academy of Sciences ; CNPC Innovation Fund ; CNPC Innovation Fund ; National Natural Science Foundation of China(40437018 ; National Natural Science Foundation of China(40437018 ; 40874024) ; 40874024) ; Key Laboratory of Engineering Geomechanics of Chinese Academy of Sciences ; Key Laboratory of Engineering Geomechanics of Chinese Academy of Sciences ; CNPC Innovation Fund ; CNPC Innovation Fund ; National Natural Science Foundation of China(40437018 ; National Natural Science Foundation of China(40437018 ; 40874024) ; 40874024)
源URL[http://ir.iggcas.ac.cn/handle/132A11/70576]  
专题中国科学院地质与地球物理研究所
通讯作者Zhang, Meigen
作者单位1.Chinese Acad Sci, Key Lab Engn Geomech, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earths Deep Interior, Beijing 100029, Peoples R China
3.China Univ Geosci, Beijing 100081, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Meigen,Fu, Liyun,Li, Xinfu,et al. 2D efficient ray tracing with a modified shortest path method[J]. EXPLORATION GEOPHYSICS,2009,40(4):301-307.
APA Zhang, Meigen,Fu, Liyun,Li, Xinfu,&Li, Xiaofan.(2009).2D efficient ray tracing with a modified shortest path method.EXPLORATION GEOPHYSICS,40(4),301-307.
MLA Zhang, Meigen,et al."2D efficient ray tracing with a modified shortest path method".EXPLORATION GEOPHYSICS 40.4(2009):301-307.

入库方式： OAI收割

来源：地质与地球物理研究所

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