A PE-BASED APPROACH TO MODAL DECOMPOSITION AND SOURCE LOCALIZATION

Autor:	Gordon R. Ebbeson, David J. Thomson
Rok vydání:	1994
Předmět:	Acoustics and Ultrasonics Computer science business.industry Applied Mathematics Acoustics Mode (statistics) Narrowband Optics Modal Benchmark (computing) Range (statistics) Decomposition (computer science) Decomposition method (constraint satisfaction) Underwater business
Zdroj:	Journal of Computational Acoustics. :231-250
ISSN:	1793-6489 0218-396X
DOI:	10.1142/s0218396x94000166
Popis:	Matched mode processing is an efficient alternative to matched field processing for locating a source in an acoustic waveguide. The successful application of this method relies on the accurate modal decomposition of the pressure data received on a vertical line array. From the modes that can be resolved by a given array aperture, the source range is determined from modal phases, whereas the source depth is determined from the mode shapes. In this paper, we describe a decomposition method based on the parabolic equation (PE) propagation model for recovering this modal information from vertical array data and which can be used to localize an underwater source by the matched mode processing method. We apply our PE-based decomposition/localization scheme to several benchmark problems involving a narrowband acoustic source operating in a shallow water environment.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::87363647a306a322e81f2f58334c1d9f https://doi.org/10.1142/s0218396x94000166 Zobrazit plný text záznamu