Bend-ray Kirchhoff pre-stack time migration based on Chebyshev polynomial

doi:10.3969/j.issn.0001-5733.2011.10.023

	Bend-ray Kirchhoff pre-stack time migration based on Chebyshev polynomial
	Liu Lu 1,2; Liang Guang-He 1; Fu Chao 1,2; Li Zhi-Yuan 1,2
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2011-10-01
卷号	54 期号:10 页码:2665-2672
关键词	Kirchhoff pre-stack time migration Bending ray Chebyshev orthogonal polynomial VTI media
ISSN号	0001-5733
DOI	10.3969/j.issn.0001-5733.2011.10.023
文献子类	Article
英文摘要	Bend-ray Kirchhoff pre-stack time migration is considered as a kind of method which synthesizes the efficiency of pre-stack time migration and the precision of pre-stack depth migration. Aiming at decreasing the traveltime calculated amount of bend-ray Kirchhoff pre-stack time migration with preserving the accuracy, we particularly analyze the property of Chebyshev polynomial, and then make up the reduction coefficients graph with Chebyshev orthogonal polynomial, moreover, we take use of simulated annealing method to optimize the coefficient in terms of different intervals; thus, realize optimal approximation between optimized 2nd-order Chebyshev traveltime formula and high order one within the range of long offset. Finally, through the method verification of homogenous media, VTI media and field data, it is p roved that compared with high order bend-ray migration, optimized 2nd-order Chebyshev migration presented in this paper not only decrease the traveltime calculation amount, but also acquire the comparative imaging accuracy with the high order one.
WOS关键词	MEDIA
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000296410000023
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/74208]
专题	中国科学院地质与地球物理研究所
通讯作者	Liu Lu
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu Lu,Liang Guang-He,Fu Chao,et al. Bend-ray Kirchhoff pre-stack time migration based on Chebyshev polynomial[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2011,54(10):2665-2672.
APA	Liu Lu,Liang Guang-He,Fu Chao,&Li Zhi-Yuan.(2011).Bend-ray Kirchhoff pre-stack time migration based on Chebyshev polynomial.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,54(10),2665-2672.
MLA	Liu Lu,et al."Bend-ray Kirchhoff pre-stack time migration based on Chebyshev polynomial".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 54.10(2011):2665-2672.