FIELD: hydroacoustics. SUBSTANCE: device has two fiber coil which are optically connected to interferometer, coherent light source, ultrasound transmitter, photodetector, amplifier, low-pass filter, high-pass filter, band-pass filter, microprocessor, sensors of temperature, saltiness and sound force gradient. One fiber coil is made from metallized fiber. EFFECT: increased functional capabilities. 3 cl, 3 dwg
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