Deconvolution of seismic recods by Fourier hologram filtering with sphero-cylindrical optics.

This article is subsequent to another one published here [1] and already devoted to the applications of coherent optics to geophysical oil prospection; it describes an optical process of deconvolution of seismic records based on the use of a Fourier hologram-Filtering. The use of sphero-cylindrical optics on the correlation device enables all the traces in one and the same section to be processed selectively but simultaneously. The initial operation consists in manufacturing the deconvolution filter (as) the Fourier hologram of an optical representation of the convolution signal. During the second operation, the section to be deconvolved is placed in the object space and the filter in the Fourier space where it performs through spectral division the deconvolution obtained in the image space. Various results are shown and commented on, firstly concerning synthetic documents and then true recordings.