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An experimental model of surface reflection in the underwater anechoic basin at KRISO

Authors
Kim, S.-M.Lee, C.-M.Choi, Y.-C.Park, J.-W.Lim, Y.-K.
Issue Date
2002
Publisher
Society for Underwater Technology
Keywords
Impulse response function; Surface reflection; Underwater anechoic basin
Citation
Underwater Technology, v.2002-January, pp 257 - 260
Pages
4
Journal Title
Underwater Technology
Volume
2002-January
Start Page
257
End Page
260
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/9155
DOI
10.1109/ut.2002.1002435
ISSN
1756-0543
Abstract
The behavior of propagating waves in the ocean are highly dependent on the surface geometry of the ocean as well as the spatial distributions of temperature, pressure, and salinity in the media. Waves are refracted due to the spatial variation of the media properties, reflected by free surfaces and bottoms, and scattered by small floating particles. These phenomena make it difficult to identify original signals during acoustic measurements. Among them reflection gives the most significant effect on the signal distortion by building up the multi-paths between transmitters and receivers. In this research, a surface reflection model is investigated by an experimental approach. The experiments were performed in the underwater anechoic basin at KRISOKORDI. It was found that a reflected wave is composed of 3 parts: negative and positive peaks and a ringing component. Among them the negative peak plays a dominant role in the surface reflection. ? 2002 IEEE.
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