Beam pattern measuring apparatus for side-scanning sonars

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating

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367 88, H04B 1700

Patent

active

055329748

ABSTRACT:
An apparatus for performing beam pattern measurements for a side-scanning nar. The apparatus consists of a vertically mounted guide affixed to one end of a test pool and a vertically fixed mounting means affixed to the opposite end of the pool, the guide and mounting means orthogonal to each other. A carriage to which the transducer under test is attached is movably secured to travel up and down the guide. A gear motor having a takeup reel winds and unwinds an attached cable, the other end of which connects to the carriage, producing its up and town travel. The motor connects via a motor controller and position cable to a motor controller at a remote instrumentation facility. A position sensing device slaved to the carriage cable sends carriage position information to the facility for motor control. The array is secured immobile to the vertically fixed mounting means. The vertically fixed mounting means may be arranged to permit horizontal travel in the direction of the vertically mounted guide for range adjustment.

REFERENCES:
patent: 3859620 (1975-01-01), Percy
patent: 4320468 (1982-03-01), Montross
patent: 5010525 (1991-04-01), Skinner et al.

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