Repositório Institucional da Produção Científica da Marinha do Brasil (RI-MB)

Please use this identifier to cite or link to this item: https://www.repositorio.mar.mil.br/handle/ripcmb/844537
Title: Three-dimensional eigenray search for a vertical line array
Authors: Calazan, Rogério de Moraes
Rodríguez, Orlando
Underwater Acoustics Conference and Exhibition, 004., 2017, Skiathos, Greece
Keywords: Ciência, tecnologia e inovação
Acústica Submarina
DGPM knowledge areas: Ciência, Tecnologia e Inovação
Issue Date: 2017
Abstract: Eigenray search in a two-dimensional waveguide is a feasible task, that can be solved efficiently through optimization of an ad hoc defined function (like, for instance, final ray depth deviation from hydrophone depth) over original ray elevations; in the worst case even when rays can be reflected backwards to the source an exhaustive search over the ray trajectory can be able to identify eigenrays by testing the proximity of each ray to the hydrophone. In three-dimensional waveguides the situation is far more complicated: the proximity method can be found to be very inefficient due to out-of-plane propagation and optimization needs to be developed over the plane of ray elevations and azimuths. The work presented here addresses the three-dimensional search of eigenrays based on the simplex method, implemented in a recent ray model; the performance of the method is discussed through comparisons with experimental data for a vertical line array.
Access: Open access
URI: http://www.repositorio.mar.mil.br/handle/ripcmb/844537
Type: Journal article
Appears in Collections:Ciência, Tecnologia e Inovação: Coleção de Artigos

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