The most primative deconvolution is a symmetrical filter,
denotes the amplitude spectrum of the data.
of this filter is spectrally white.
This decon filter converts a Ricker wavelet to an impulse at its center.
Notice this impulse will have the opposite polarity
of that of predictive decon which attempts to spike the first lobe of the Ricker wavelet.
The non-causality needed is defined
by the small backward distance from the center of the Ricker wavelet to its onset.