Dictionary:High-fidelity vibroseis (HFVS)

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An alternative to vibroseis correlation for compressing vibrator field data. The vibrator’s baseplate or reaction-mass’s acceleration is recorded along with the geophone traces. Each geophone trace is compressed by dividing its Fourier transform by that of the baseplate or reaction-mass acceleration signal. The resulting trace is minimum-phase bandpass filtered and spike deconvolved. The resulting fundamental reflection wavelets are minimum phase. The method claims to remove detrimental effects of changing near-surface properties and vibrator-generated harmonics. ExxonMobil tradename.