DEVICE FOR GEOELECTRIC PROSPECTING Russian patent published in 2000 - IPC

FIELD: geophysics, in particular, ratio-frequency prospecting, applicable for geoelectric prospecting of subsurface layer of soil or rock mass at earth-moving with the aim of detection of various discontinuities injuring the excavating part of earth-moving machines. SUBSTANCE: the device has a control unit, modulating code formation unit, unit for changing the modulating pulse repetition period, frequency changing unit, transmitter, memory unit, antenna switch, transceiving antenna, receiver, first multiplier, frequency-shift unit, first filter of difference frequency, second multiplier, second filter of difference frequency, phase discriminator, analog-to- digital converter, correlator, first display unit, multi- channel correlator, multiplier delay line, multi-channel multiplier, low-pass filter, comparator and second display unit. EFFECT: enhanced noise immunity, sensitivity and truth of geoelectric prospecting of subsurface layer of soil or rock mass. 2 dwg