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- W2897057604 abstract "Summary The decoupled fractional Laplacian (DFL) is attractive for developing stable Q-compensated RTM because it can compensate independently for either amplitude loss or velocity dispersion. A common numerical method of DFL is pseudospectral (PS) method, in which the fractional spatial derivatives are calculated by FFT, and the time derivative is computed by finite-difference (FD) method. But the FD time discretization will inevitably lead the time stepping errors. In this paper, we propose two nonstandard pseudospectral (NSPS) schemes to compensate the time stepping errors. Stability analysis and several simulation examples show that the proposed NSPS schemes enjoy better accuracy and stability than traditional PS method." @default.
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- W2897057604 date "2018-06-11" @default.
- W2897057604 modified "2023-10-11" @default.
- W2897057604 title "High-order Time Accuracy Fractional Laplacian Viscoacoustic Simulation Scheme Using Nonstandard Pseudospectral Method" @default.
- W2897057604 doi "https://doi.org/10.3997/2214-4609.201801447" @default.
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