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- W2352245587 abstract "This paper first introduces the regularization method to optimize the difference correction term in Fourier finite difference(FFD)migration method,and then to solve the difference correction term with theω-circulant preconditioner conjugate gradient(PCG)method.Introduction of PCG may have the following advantages:A.avoiding the splitting method;B.improving result accuracy;C.suitable for large-scale data processing with fast Fourier transforms(FFT).The main idea in this paper is to combine theω-circulant boundary condition with the regularization method in order to overcome boundary effects of Fourier transform and optimize the iterative convergence in PCG method.Model tests show the validity and correctness of the proposed method in the paper." @default.
- W2352245587 created "2016-06-24" @default.
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- W2352245587 date "2014-01-01" @default.
- W2352245587 modified "2023-09-27" @default.
- W2352245587 title "Regularization migration imaging based on the ω-circulant preconditioner conjugate gradient methods" @default.
- W2352245587 hasPublicationYear "2014" @default.
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