PERSONAL UNDERWATER RESQUE AND NAVIGATION SYSTEM Russian patent published in 2017 - IPC B63C11/48 G01S1/72 G01S3/80 B63C11/26 

FIELD: physics.

SUBSTANCE: proposed personal underwater rescue and a navigation system operating in including the standard frequency SOS (37.5 kHz), comprising beacon - "pinger", the housing of which is a piezoceramic cylindrical transducer sonar signals formed with lids and sealed from the sound transmission polyurethane coating, and the direction finder hydroacoustic signals, which is provided with a compass, and a removable protective screen and sonar antenna comprises a cylindrical hermetic equipment module with it mechanically connected extensive linear hydroacoustic antenna of the plurality of two sets of piezoelectric elements with an active surface perpendicular to the axis of the equipment module, capable of forming a uniform geometrically extended multi-element, and is capable of dividing into two parts independent of each other, with the ability to rotate in the horizontal and vertical planes, a strip of "acoustically soft" porous material is fixed on the back side of both parts of the acoustic antenna, a multi-element two-band LED indicator is hermetically sealed in the instrument module.

EFFECT: feature of the proposed system is its ease of use with high system efficiency.

5 dwg