SYSTEM FOR DETECTING AND RECORDING HYDROACOUSTIC AND HYDRODYNAMIC EFFECTS Russian patent published in 2016 - IPC G01S15/88 

FIELD: hydroacoustic and hydrodynamics.

SUBSTANCE: invention relates to detection and recording of natural hydrodynamic field of world ocean, hydroacoustic and hydrodynamic fields created by movement of underwater and surface objects, including in infrasonic range from 0 to 1 Hz. System for detecting and recording hydroacoustic and hydrodynamic actions comprises receiving module with anchor and float. Receiving module is connected by means of fibre-optic cable for transmitting of optical pulses with recording and processing equipment and is made in form of housing accommodating angular velocity sensor sensing element in form of coils with isotropic single-mode optical fibre length of up to 25 km and coupler. Recording and processing equipment used is presented by optoelectronic module comprising housing accommodating laser light source, photodetector, recorder, converter and power supply unit. At that, optoelectronic module is configured to receive and transmit analogue or digital information into computer via communication line.

EFFECT: wider frequency range from 0 to 1 Hz and more, as well as high noise immunity, low sensitivity to external electromagnetic effects.

1 cl, 3 dwg