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A Shallow-Water Reverberation PE Model

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Abstract:

A numerical model (REVPA) has been developed to predict long-range shallow water reverberation. This model is based on a wide-angle parabolic equation (fourth order Padé approximation) and takes reverberation phenomena into account by means of a scattering index. The coupling between the PE model and the indexes is performed, at each range step, by means of a plane-wave decomposition. Two different decomposition methods are implemented in REVPA: a spatial Fourier transform (which is generally used in PE models) and a modal decomposition based on the WKB approximation. Different simulations are presented (for a constant and a variable sound speed profile), the results of which are compared to the normal mode model R-SNAP.

Document Type: Research Article

Publication date: September 1, 2002

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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