EFFECT OF SURFACE WAVES FROM A MOVING OBJECT ON ITS IMAGE DURING RECONSTRUCTION USING APERTURAL SYNTHESIS
V. P. Yushchenko, V. N. Legkii, S. A. Litvinenko, S. A. Budnov
Novosibirsk State Technical University, prosp. K. Marksa 20, Novosibirsk, 630073
Keywords: поверхностная волна, ультразвук, монохроматический зондирующий сигнал, апертурный синтез, реконструкция изображения, траекторный сигнал, томография, surface wave, ultrasound, monochromatic sounding signal, aperture synthesis, image reconstruction, trajectory signal, tomography
Abstract
The reconstruction of an image of the section of a thin wire, obtained by an ultrasonic locator in an aqueous medium at frequency of 1.3 MHz with a monochromatic sounding signal is considered. Reconstruction of the image was carried out using a synthesized aperture by correlation processing of the trajectory Doppler signal with calculated reference trajectory signals from point objects. The disturbing effect of the reflected ultrasonic wave from the surface wave left by the moving wire on the image reconstruction is taken into account. The results of reconstruction of the image of the wire cross-section from model and experimental trajectory signals in the presence of a surface wave are given.
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