SUBMARINE HYDRO-ACOUSTIC COMPLEX NOISE DIRECTION-FINDING SYSTEM Russian patent published in 2020 - IPC G01S3/80 

FIELD: hydro acoustics.

SUBSTANCE: invention relates to hydroacoustics and can be used as hydroacoustic weapons of submarines (SM), as well as in exploration of the World Ocean. Submarine hydroacoustic system (HAC-SM) comprises medium-frequency noise direction-finding subsystem (NDF-MF) in-series connected to preprocessing equipment (PPE-1) located in nose cone SM, and a subsystem of noise direction-finding in the low-frequency band (NDF-LF), made as a flexible extended towed antenna (FETA), in series connected to the preprocessing equipment (PPE-2), and information from subsystems NDF-MF and NDF-LF after preliminary processing is transmitted via common bus to central computer system and then transmitted to operators or external systems. To increase interference immunity and range of operation of the system of noise direction-finding, to increase its direction in the low-frequency range, as well as to eliminate direction-specific ambiguity inherent in FETA, NDF-LF comprises first receiving module (RM-1) located in nose hub SM, equipped with combined receiver (CR-1) in fairing, compass and angular position sensors, in-series connected to the preprocessing equipment, the second receiving module (RM-2) located at the FETA end, equipped with the combined receiver (CR-2) in the fairing, the compass and the angular position sensors, and information obtained by the first and second receiving modules, after preliminary processing, is transmitted via the general complex bus to the first and second subsystems for processing scalar-vector information, located in the central computer system, and then transmitted to HAC operators or external systems.

EFFECT: hydroacoustic complex of submarine is described.

1 cl, 2 dwg