FIELD: mechanics.
SUBSTANCE: proposed device comprises a hydro acoustic receiver, key device, recoding amplifier, magnetic memory built around magnetic heads, threshold device, erasing generator, power amplifier and underwater acoustic projector. Note that aforesaid magnetic memory additionally incorporates a modulator for frequency modulation of the signal repeatedly reproduced with the help of the magnetic head. Aforesaid modulator incorporates a playback head fitted on movable carriage coupled with the rod passing through solenoid coils controlled by the flip-flop, the head output being connected, via power amplifier, to the proposed circuit acoustic projector. Ahead of erasing head a limiting head with threshold device can be arranged to control the erasing generator and, via the key device, the auxiliary playback head.
EFFECT: generation of efficient aimed interference for multi-frequency hydro acoustic signal.
2 cl, 1 dwg
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