FIBER-OPTICAL HYDROPHONE WITH COMPENSATION OF HYDROPHYSICAL INTERFERENCE

摘要

FIELD: underwater acoustics, measurement of noise emission of various objects under sea conditions. SUBSTANCE: low and high frequency filters are placed across output of fibrous interferometer. Recorder of level of sound pressure is mounted after high-frequency filter and feedback system after low-frequency filter. System optimizes voltage proportional to pulsations of velocity pressure with source of electric energy. Object fibrous coil of interferometer is interference fitted onto bimetal form heated from source of electric energy controlled by feedback unit of hydrophone. EFFECT: improved functional stability. 2 dwgt