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Article title RESEARCH OF VERTICAL DISTRIBUTIONS PARAMETRIC RADIATOR IN REGULAR WAVEGUIDE
Authors D.A Kravchuk
Section SECTION I. METHODS AND MEANS OF ECOLOGICAL MONITORING OF WATER AREAS
Month, Year 09, 2011 @en
Index UDC 534.232
DOI
Abstract Researchning of vertical distributions for distanse in shallow woter`s ecosystem. On the basis of the received results it is possible to make the conclusion about an opportunity of excitation in an acoustic wave guide in conditions of the fine sea of the lowest styles in a wide strip of frequencies at the appropriate inclination of an acoustic axis of the parametrical radiating aerial. The arrangement near to a parametrical radiator of acoustically soft border of section changes phase parities between signals difference the frequencies, formed before reflection from border of section and after reflection of waves of a rating. For a case of acoustically soft bottom the maximum of amplitude of excitation of the first fashion is observed at an arrangement of a radiator in the middle of a wave guide. It is possible to explain it to that in a wave guide both reflecting borders have identical acoustic characteristics.

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Keywords Ecology; selective excitation of modes.
References 1. Кравчук Д.А. Экспериментальные исследования параметрических антенн для экологического мониторинга мелководных районов моря // Известия ЮФУ. Технические науки. – 2009. – № 6 (95). – С. 106-109.
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3. Кравчук Д.А. Куценко А.Н. Экспериментальное исследование модового распространения сигнала в мелком море. XVIII сессия Российского акустического общества. – 2006. – Т. 2. – С. 214-217.

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