RECALCULATION OF WAVE-FIELDS OF HEAD WAVE S BY THE VINER FILTERS

Some questions of automated processing of head waves in the observatio n systems with repeated wave overlappings are considered. Investigatio ns on perfecting the algorithms for recalculation of head-wave fields to dynamic time sections have been carried out. On the basis of the Vi ner filter and dynamic relationship for head-wave spectra, a multistep algorithm For recalculation of head wave from one recording base to a nother has been developed. In this algorithm an accuracy increase is a chieved by using a number of seismograms recorded in parallel on devel oping a recalculation filter. The multistep algorithm has permitted re calculation of head-wave field to the route of time section. The resul ts of practical implementation of the developed algorithm to the mater ials obtained by means of seismic survey by the refracted-wave method are discussed. It is shown that the above wave processing increases th e signal/noise ratio in the routes and supresses all types of waves, e xcept for a head wave, on recording. Thus, one of the most tedious ste ps in head-wave processing becomes automated.