METHOD AND SYSTEM FOR SYNCHRONIZED ACQUISITION OF SEISMIC SIGNALS

摘要

method and device for synchronized acquisition of seismic signals by one or more acquisition units adapted to the digitalization of seismic signals.for each signal, a set (n) of samples of these signals, a reference time for rescheduling.from the first series x [n] of digital samples of the seismic signal produced from an initial time or prior to the time reference.the method essentially involves the detection of a synchronization signal indicative of a reference time (t).the extent of the gap (d) between the actual time reference time and the initial time.the determination of the coefficients of a digital filter (f) to compensate for the fractional part (d) of the gap of time measured.and the application of digital filter to compensate for the first set of samples to obtain a series of digital samples for the rescheduled time reference.in order to speed up the determination of the filter coefficients which depend on the difference of observed.we prefer pru00e9calculer coefficients of a number of intermediate filters corresponding to the sampling fractions determined.application to seismic prospecting and in the detection of earthquakes, etc.