Digital algorithms of wave field fan filtration

In the paper the situation will be considered as applied to processing seismic wave fields actuated by explosion sources and registered with seismic detectors being in series on the earth surface or in the bore. Solving of the main problems of processing seismic information (dedication, resolution and estimation of the waves parameters) is based on an increase of signal-to-noise merit. In this case the complexity of geophysical problems is determined by the availability not only of random noise but also intensive interfering events having the properties close to useful waves. Two-dimensional filters carrying out the dedication of the waves towards the specified direction fill an important place. They include space-time directed fan filters. Digital realization of the fan filters in space-time area (by means of convolution. integral or recursion formulas) with great fields, dimensions result in considerable time expenses and requires computer calculations. At the same time the efficiency of these algorithms usage in processing small fields decreases.