Meaningful interpretation of reflection and tomographic data require a correct understanding of the involved acquisition and recording characteristics, so as to separate the wavefield information that comes from the medium under investigation from the information that solely refers to the probing wavefield.

In seismic operations, the problem of removing, or at least attenuating, the influence of the artifacts introduced by data acquisition and recording is aggravated by the complicated nature of the measurement procedures (large areal land or marine surveys) and devices (e.g., vibroseis, air-gun arrays, multicomponent receivers in difficult locations, etc.). This explains why the wavelet-estimation problem is an...

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