FIELD: seismic prospecting. SUBSTANCE: in addition to standard equipment that includes reference signal generator, seismic radiator and correlator it is proposed to use unit of additional processing that allows harmonic formers and adder to be employed. Reference signal from second output of generator is fed simultaneously and in parallel to harmonic formers and adder. Harmonics with weight coefficients specified for each of them are directed into adder where reference signal is present. Resulting signal of adder is directed to correlator. EFFECT: increased efficiency, expanded frequency band of registered waves and enhanced resolution. 2 cl, 1 dwg
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