Simultaneous Coded Vibroseismics

C-06 SIMULTANEOUS CODED VIBROSEISMICS Abstract Vibrations from two vibrators emitting simultaneously with shifted coded signals were recorded and separated. Processing and stacked sections are similar to the results obtained with a classical sweep acquisition. The possibilities of separation of simultaneous records offered by the experimented codes may lead to an increase in productivity. They may also lead to an increase in resolution by allowing to dissociate and reconstruct the shot arrays. Introduction Methods for separating overlapping sweeps have been developed for productivity purposes (Rozemond 1996). These methods encounter some problems with the presence of harmonic noise (Meunier et al. 2001).