Full Waveform Inversion Based on an Asymptotic Solution of Helmholtz Equation

Datum vydání
2023Publikováno v
Geosciences (Switzerland)Ročník / Číslo vydání
13 (1)ISBN / ISSN
ISSN: 2076-3263Metadata
Zobrazit celý záznamKolekce
Tato publikace má vydavatelskou verzi s DOI 10.3390/geosciences13010019
Abstrakt
This study considers the full waveform inversion (FWI) method based on the asymptotic solution of the Helmholtz equation. We provide frequency-dependent ray tracing to obtain the wave field used to compute the FWI gradient and calculate the modeled data. With a comparable quality of the inverse problem solution as applied to the standard finite difference approach, the speed of the calculations in the asymptotic method is an order of magnitude higher. A series of numerical experiments demonstrate the approach's effectiveness in reconstructing the macro velocity structure of complex media for low frequencies.
Klíčová slova
full waveform inversion, asymptotic, frequency-dependent rays, Helmholtz equation,
Trvalý odkaz
https://hdl.handle.net/20.500.14178/2276Licence
Licence pro užití plného textu výsledku: Creative Commons Uveďte původ 4.0 International