EXPERIMENTAL CONFIRMATION OF THE THEORETICAL POSITIONS OF CIRCULAR APERTURE SYNTHESIS
V.P. Yushchenko1, S.A. Litvinenko1, O.V. Hoffman2, T.V. Duluba3
1Novosibirsk State Technical University, Novosibirsk, Russia
2"Confadecor" LLC, Smolensk, Russia
3Saint-Gobain LLC, Moscow, Russia
Keywords: synthesis of an aperture along a circular trajectory in water, focusing of circular aperture synthesis, scanning control of the focus position, trajectory Doppler signal, reference trajectory signals, image reconstruction based on a trajectory signal
Abstract
The possibilities of photographing objects in an aquatic environment on acoustic waves by means of circular aperture synthesis are experimentally tested. An experimental setup has been created to implement a method for reconstructing the image of objects in cross sections using a trajectory Doppler signal. Image reconstruction is carried out by scanning an object placed inside a rotating cylindrical water tank controlled by a circular synthesized aperture focus. The algorithm of focus control and image construction is given. The experiment is conducted with the simplest text objects:metal point object and metal rod with a diameter of 2 mm and a length of 10 cm. The problems of implementing circular aperture synthesis using a cylindrical rotating water tank with piezo sensors attached to the inner wall of the tank are discussed.
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