Comparison of Backscattered Sea Bottom Echo Modelling in the Acoustic Pressure Domain and in the Intensity Domain
Abstract:In general, the theoretical modelling of acoustic scattering on seafloor is necessary in order to predict which features of bottom echo and in what manner should be used to characterise the seabed properties with best potential generalisation abilities and sufficient level of accuracy. In the paper, the two approaches of the backscattered bottom echo waveform modelling are analysed and compared. Namely, the modelling of the backscattered echo waveform in pressure domain using Kirchhoff approximation and the modelling of the echo in acoustic intensity domain. The simulation of bottom echoes using those two concurrent approaches was performed for the same seabed surfaces. The obtained preliminary results are presented and compared with respect to the adequacy of each modelling method for approximate describing the seabed backscattering.
Document Type: Research Article
Publication date: September 1, 2002
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- 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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