Publications [#283848] of Qing H. Liu

Papers Published

1. Wei, BJ; Liu, QH, Contrast source inversion algorithm for reconstructing 3-D objects in stratified medium, Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science), vol. 31 no. 4 (August, 2007), pp. 38-45, ISSN 1673-5005
   (last updated on 2023/08/08)

   Abstract:
   Contrast source inversion (CSI) algorithm recasts the inversion problem as a minimization of a cost functional, thus an iterative sequence is formed to reconstruct the contrast sources and contrasts. A 3-D CSI algorithm was developed to reconstruct 3-D objects in stratified medium. It is an extension of 2-D CSI algorithm. As there is no need for the forward solver and a manual selection of regularization parameter in the algorithm, the inversion process is more stable. The fast Fourier transform technology is adopted to calculate the dyadic Green's operator and its adjoint operator during each iteration of CSI, which ensures the high efficiency of the algorithm in stratified medium. The inversion results for some complicated models obtained from the CSI algorithm show that the algorithm is very efficient in reconstructing arbitrary 3-D inhomogeneous objects in a stratified medium.