APPARATUS FOR HYDROACOUSTIC IMAGING OF UNDERWATER SPACE IN LIMITED VISIBILITY CONDITIONS Russian patent published in 2012 - IPC B63C11/48 G01S15/02 

FIELD: physics, acoustics.

SUBSTANCE: invention relates to hydroacoustic equipment and can be used as part of diving equipment. The apparatus has a sealed housing in which there is an antenna unit, a radiated signal generating unit, a received signal processing unit, as well as an acoustic image graphic display connected by a cable line to the output of the received signal processing unit. The antenna unit has, in one plane perpendicular to the longitudinal axis of the sealed housing, radiating and receiving multi-element arrays in form of mutually perpendicular lines. The radiated signal generating unit has series-connected generator, tapped delay line and multichannel amplifier whose output is connected to the radiating multi-element array. The received signal processing unit has, connected in series to the output of the receiving antenna array, a receiving multichannel amplifier, an analogue-to-digital converter, a beam pattern former and a correlation function calculating unit whose second input is connected to the output of the generator. The acoustic image graphic display unit has a video controller connected by a cable line to the output of the correlation function calculating unit, a graphic display connected to the output of the video controller, and a control panel connected to the input of the video controller.

EFFECT: invention improves quality of images of underwater objects and enables to view the surrounding underwater space for every cycle of operation on all three coordinates within given boundaries.

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