A widely convergent generalized pulse-spectrum technique for the inversion of two-dimensional acoustic wave equation

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摘要

An algorithm of the generalized pulse-spectrum technique (GPST) is used for the inverse problems of two-dimensional acoustic wave equation, and a skill of saving computational cost is designed in choosing regularizing parameters. To overcome the defect of the local convergence of the GPST, a widely convergent GPST (WCGPST) is constructed. Numerical simulations are carried out to test the feasibility and to study the general characteristics of the WCGPST. It is found that the WCGPST is not only as robust as the standard GPST but also possessing widely convergent region.

论文关键词:Inverse problem of geophysical prospecting,Nonlinear inversion,2-D wave equation inversion,Generalized pulse–spectrum technique,Homotopy method

论文评审过程:Available online 12 April 2005.

论文官网地址:https://doi.org/10.1016/j.amc.2005.02.011