Computer detecting and processing of the signals of a flat-coil absolute-position sensor based seismic detector

A fast signal-processing system has been presented in this work for processing of frequency-shift signals obtained from the improved (by a flat pick-up coil based $SFCO$-method) seismic detector, capable to register also rapid vibrations (sharp shakings) of the Earth crust. It might be used also for detection and explanation of the nature of nuclear explosion and other types of blast explosions.