| 摘要 |
FIELD: physics; measurement. ^ SUBSTANCE: invention is related to the field of seismology and may be used in national systems of seismic control for short-term prediction of earthquake. Detector comprises channel for reception of polarisation of light flux reflected from underlying surface, and route for signal processing. The following components are serially connected into reception channel: lens, depolarisator, amplifier, peak detector, threshold device, analog-digital converter, unit of buffer memory, and also separate generator of sawtooth voltage. At that sawtooth voltage is connected to plated liners of depolarisator. ^ EFFECT: higher efficiency and validity of foreshock detection. ^ 6 dwg |
