Multiple Attenuation In The Plane Wave Domain By Matching Filter

In this paper we present a method of multiple attenuation<br>in the plane wave domain that uses a filter estimation<br>procedure to match the angle dependent primaries<br>to predict the observed multiples. The filter is obtained<br>through the solution of an optimization problem. Instead<br>of using a source function estimate we use the primaries<br>from the shallow part of the data (reflectivity) to estimate<br>the multiples associated with these events that are correct<br>in traveltime, but not necessarily in amplitude. Using<br>this filter the amplitude and phase of the multiples<br>are estimated and the predictedmultiples are subtracted<br>from the data to obtain multiple free data. The application<br>of this method is illustrated on synthetic and real<br>data and the results demonstrate its effectiveness in attenuating<br>multiples. The proposed method is computationally<br>very efficient.