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A platform for research: civil engineering, architecture and urbanism
Non-uniqueness of waveform inversions in the Laplace domain
The non-uniqueness of the solution is one of the major obstacles for a successful full waveform inversion. This paper shows that there are at least two solutions for waveform inversions in the Laplace domain: the true velocity model; the long-wavelength background velocity model. The Laplace domain inversion can recover the true velocity model if provided with an accurate initial model, but it will instead result in a smooth long-wavelength velocity model if the initial model is inaccurate and smooth. In this case, the inverted long-wavelength velocity model can still be used for either migration or as an initial velocity model for frequency domain waveform inversion.
Non-uniqueness of waveform inversions in the Laplace domain
The non-uniqueness of the solution is one of the major obstacles for a successful full waveform inversion. This paper shows that there are at least two solutions for waveform inversions in the Laplace domain: the true velocity model; the long-wavelength background velocity model. The Laplace domain inversion can recover the true velocity model if provided with an accurate initial model, but it will instead result in a smooth long-wavelength velocity model if the initial model is inaccurate and smooth. In this case, the inverted long-wavelength velocity model can still be used for either migration or as an initial velocity model for frequency domain waveform inversion.
Non-uniqueness of waveform inversions in the Laplace domain
Ha, Wansoo (author) / Chung, Wookeen (author) / Shin, Sungryul (author) / Shin, Changsoo (author)
Geosystem Engineering ; 15 ; 151-156
2012-09-01
6 pages
Article (Journal)
Electronic Resource
Unknown
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