(t x) domain, pattern-based multiple separation
Robert G. Clapp, Morgan P. Brown · 2000
Pattern-based signal/noise separation is a common technique to suppress multiples. It can be formulated in the t x domain using non-stationary Prediction Error Filters (PEF). One can obtain a kinematically correct model of the multiples by downward continuation. The CMP gather and the corresponding multiple estimate are characterized by a space varying PEF. After applying a simple separation technique one can obtain CMP gathers where the multiple energy is significantlyattenuated. The method is applied to synthetic and 2-D fieldCMP gathers.