Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.1/1629
Título: Experimental results of geometric and geoacosutic parameter estimation using a vector sensor array
Autor: Santos, P.
Felisberto, P.
Jesus, S. M.
João, J.
Palavras-chave: Underwater acoustic vector sensor
Seabed parameter estimation
Direction of arrival
Data: Nov-2010
Editora: Encontro de Tecnologia Acustica Submarina
Relatório da Série N.º: IX;
Resumo: The objective of this paper is to present an overview of the work developed at SiPLAB, University of Algarve, with vector sensor data collected during Makai experiment 2005, in geometric and geoacoustic parameter estimation. During this experiment devoted to high frequency initiative, acoustic data were acquired by a four element vertical vector sensor array (VSA). A vector sensor is a directional sensor constituted by one omni directional pressure sensor and three velocity-meters, where both the acoustic pressure and the three particle velocity components are measured. The spatial filtering capabilities of the vector sensors are used to estimate the direction of arrival (DOA) of low and high frequency acoustic sources considering a single and a multiple sensor VSA. An inversion method based on Bartlett estimator is used for three dimensional localization of ship’s noise where the noise source is estimated in range and depth taking into accounts the azimuth given by DOA. Moreover, this method is applied to seabed parameters estimation like sediment compressional speed, density and compressional attenuation, contributing to improve the resolution of these parameters.
Peer review: yes
URI: http://hdl.handle.net/10400.1/1629
Aparece nas colecções:FCT2-Artigos (em revistas ou actas indexadas)

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