Tilt sensor for resolving left-right ambiguity in underwater...

Details Tilt sensor for resolving left-right ambiguity in underwater... Tilt sensor for resolving left-right ambiguity in underwater...

G - Physics

01

C

349/25, 349/57,

G01C 9/20 (2006.01) G01C 9/06 (2006.01)

Patent

CA 1250924

ABSTRACT A sensor for resolving the left-right ambiguity encountered in horizontal line hydrophone arrays consists of an orthogonal pair of dipole hydrophones, a monopole hydrophone, and a tilt sensor, the tilt sensor connecting the dipole hydrophones so as to provide a single dipole hydrophone which is always oriented horizontally. The tilt sensor consists of two variable capacitors made from hollow cylinders of high permittivity dielectric material, partially filled with a quantity of liquid mercury which forms the variable inner electrodes of the capacitors. The outer electrodes of the capacitors, on the outside of the cylinders, having a sinusoidally-shaped perimeter and being oriented at right angles to each other, are connected to the crossed dipoles in order to provide the required horizontal dipole hydrophone.

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