Attenuation compensation for georadar data by Gabor deconvolution
Robert James Ferguson, Gary F. Margrave
It has been shown through previous data examples that nonstationary deconvolution, and in particular the CREWES Gabor nonstationary deconvolution, provides signiﬁcant enhancement for deep georadar reﬂections. In many examples the improvement extends the radar image from a few meters to a few tens of meters.
We ﬁnd here through controlled experiment that nonstationary deconvolution has an attenuation correction property - the frequency and phase components of attenuation loss are compensated for. Though the compensation effect is noticeable on seismic data, the effect on georadar data is quite a bit more obvious and we ﬁnd that, in terms of attenuation factor Q, Q is about an order of magnitude smaller (so the attenuation effect is much larger) for georadar than it is for seismic. We show that it this Q compensation probably accounts for the signiﬁcant signal improvements that we see in georadar data.