FIELD: hydroacoustics. SUBSTANCE: hydroacoustic measuring equipment which is used for measurement of sounds produced by vessel is equipped with uniform beam pattern emitter which is located between receiver of hydroacoustic measuring equipment and vessel. Said hydroacoustic emitter may be designed as pulse sound source, for example, electric spark source. EFFECT: possibility of simultaneous measurement of parameters of primary field (level of noise produced by vessel) and secondary field (level of pressure reflected and dissipated by vessel), use of electric spark source provides possibility to measure characteristic frequencies of sound produced by vessel. 4 cl, 3 dwg
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