摘要
频率空间域显式偏移利用有限长度的褶积算子,通过对不同的频率进行空间褶积来实现偏移成像,且具有简洁、高效、便于扩展等特点。褶积算子一般通过泰勒展开或非线性优化来求取。针对以往方法进行分析的基础上,提出了一种新的褶积延拓算子计算方法,通过对模型资料和实际资料的处理,表明该方法是可行的。
A f-x Explicit migration is carried out through spatial convolution of finite-length extrapolation operator with frequency slice, which is concise, high efficient, and easy to extend from 2D to 3D. The convolution operator can be derived from Taylor expansion or non-linear optimization algorithm. Based on the analysis of conventional methods, this paper puts forward to a new calculation method of extrapolation operator, which is verified by synthetic model and real seismic data.
出处
《物探化探计算技术》
CAS
CSCD
2004年第2期109-113,共5页
Computing Techniques For Geophysical and Geochemical Exploration
