DEVICE FOR GEO-ELECTRICAL EXPLORATION Russian patent published in 2018 - IPC G01V3/12 

FIELD: geophysics.

SUBSTANCE: invention relates to geophysics, in particular to devices using electromagnetic waves of high and low frequency, and is designed to detect subsurface objects, for example, gas and oil deposits, ore deposits, including in areas with a high level of regular electrical noise. Device comprises control unit (1), Walsh function generation unit (2), modulation pulse period modulation unit (3), modulators (4), 2ⁿ-input combiner (5), transmitter (6), antenna switch (7), receiver (8), multi-channel correlator (9), including multi-tap line (10_i) delay, multichannel multiplier (11_i), multichannel filter (12_i), comparator (13_i) (where i = 1, 2, 3, …, 2ⁿ – number of elements duration ΔT, which consists of each phase-manipulated signal with improved autocorrelation properties, included in the group of sequences for a composite parallel signal), display unit (14), (n-1)-bit binary counter (15), ring four-bit registers (16), (17) and (18) shifts, multipliers (19) groups of 2ⁿ multipliers, antenna (20), (n-1)-input multiplier (21).

EFFECT: increase of efficiency of the device at the expense of use of composite redundant signal that consists of a group of phase-shift signals with good autocorrelative properties, resulting in increased noise immunity, sensitivity and measurement accuracy for detecting subsurface objects.

1 cl, 1 tbl, 14 dwg