Computation of waves scattered by inhomogeneous velocity gradient using generalized Born approximation

作     者：LIU Bo SUN Jianguo MENG Xiangyu LIU Bo;SUN Jianguo;MENG Xiangyu

作者机构：College Of Geo-Exploration Science and TechnologyJilin University 

出 版 物：《Global Geology》 (世界地质（英文版）)

年 卷 期：2020年第23卷第1期

页      面：24-31页

学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：Supported by Project of the National Natural Science Foundation of China(No.41974135) 

主　　题：generalized Born approximation gradient scattering implementation technology numerical simulation 

摘      要：The generalized Born approximation is an approximation method that represents the scattering term by the error between the exact Green s function and the approximate Green s function,mainly for the gradient scattering ***,so far,the research on the generalized Born approximation has only stayed in theory,and its implementation techniques are rarely *** order to fill this gap,the basic theory of generalized Born approximation is reviewed,and the implementation method of generalized Born approximation is discussed in this *** particular,the problem of calculating boundary effect elimination is discussed in ***,through model trial calculation,the calculation of gradient scattering,by comparing Born approximation and finite difference method,shows that using the generalized Born approximation to calculate gradient scattering achieves higher computational accuracy.