Incident angle field estimation : a one-way propagator approach

doi:10.6038/cjg20130323

	Incident angle field estimation : a one-way propagator approach
	Zhang Jian-Feng; Zhang Hui; Liu Li-Nong
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2013-03-01
卷号	56 期号:3 页码:953-960
关键词	One-way wave equation Incident angle Angle gather
ISSN号	0001-5733
DOI	10.6038/cjg20130323
文献子类	Article
英文摘要	We present a robust method to estimate the incident angle field based on the one-way propagator. The employment of monochromatic wave field is to reduce the extrapolation time dramatically and ensure the generation of the incident angle field in the whole imaging space. This incident angle field estimation method has high computational efficiency and can be applied in getting angle gather in one-way wave equation depth migration scheme. Comparison with depth migration, the cost of incident angle field estimation can be omitted. The proposed algorithm is free of smoothness of velocity model and hence can avoid large incident angle variation with small velocity perturbation compared to the traditional ray tracing or travel-time gradient picking method. This means the proposed angle field estimation method is more suitable for real velocity model and match well with the one-way wave equation prestack depth migration scheme. Computation of incident angle fields of the 2-D, 3-D layered and complicated structured models show the high computational efficiency, stability and precision of the proposed algorithm.
WOS关键词	COMMON-IMAGE GATHERS ; MIGRATION ; DOMAIN
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000317169200023
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/86760]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhang Jian-Feng
作者单位	Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Zhang Jian-Feng,Zhang Hui,Liu Li-Nong. Incident angle field estimation : a one-way propagator approach[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2013,56(3):953-960.
APA	Zhang Jian-Feng,Zhang Hui,&Liu Li-Nong.(2013).Incident angle field estimation : a one-way propagator approach.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,56(3),953-960.
MLA	Zhang Jian-Feng,et al."Incident angle field estimation : a one-way propagator approach".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 56.3(2013):953-960.