Two methods for frequency down-extrapolation

TitleTwo methods for frequency down-extrapolation
Publication TypePresentation
Year of Publication2016
AuthorsRongrong Wang, Felix J. Herrmann
KeywordsPresentation, SINBAD, SINBADFALL2016, SLIM

It is well known that low frequency data are essential to the success of the Full-Waveform Inversion. Field data from a usual marine acquisition, however, typically lack reliable low frequencies due to the existing physical limitations. One research direction focuses on studying low-frequency extrapolation, the process of extending reliable frequency bands of the raw data towards the lower end of the spectrum. We propose two optimization problems, by solving which low frequencies can be made out of the high SNR high frequency component. We present both theoretical explanation and numerical experiments to demonstrate the efficacy as well as limitation of these methods.

Citation Keywang2016SINBADFtmf