FIELD: nonlinear underwater acoustics, formation, amplification and emission of intensive high-frequency signals of special form into inhomogeneous sea medium by means of HF converters, in particular. SUBSTANCE: proposed method consists in formation, amplification and directional emission of intensive high-frequency pumping signal on frequencies ωнi, close to resonance frequency of sound dispersers dominating in given area in which capacity air bubbles in surface layer of water are utilized. HF pumping signal on frequencies ωнi interacts with LF signal of fishing boat on frequency Ω in frequency range of most acoustic sensitivity of commercial fish with formation of signals of combination frequencies ωнi±Ω, which intensively attenuate in space. Intensive HF pumping signal is emitted on frequencies ωнi in sectors of maximum intensity of LF signal by bow heading angle of fishing boat in direction of accumulation of commercial fish. In this case i-th frequencies of intensive HF pumping signal are used on frequencies ωнi close to subharmonic resonance frequency of air bubbles in surface layer of water, their resonance frequency ωs and second harmonic of resonance frequency. EFFECT: possibility of long and effective distortion of character of hydroacoustic field of fishing boat in interests of reduction of negative effect of its LF emissions on behavior characteristics of high-mobility of commercial fish. 13 dwg
