Multichannel blind deconvolution : application to marine seismic
Résumé
In seismic deconvolution, blind approaches must be considered in situations where the reflectivity sequence, the source wavelet signal and the noise power level are unknown. In this paper, we propose a new method of blind deconvolution involving a multichannel version of the SEM algorithm. We consider that the reflectivity sequence is the same for each hydrophone receiver while the noise level may differ at each channel. Compared to blind deconvolution of a single seismic trace, multichannel processing provides a faster convergence of the estimated parameters and reflectivity sequence.