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Source localization with vector sensor array during the makai experiment
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Orientador(es)
Resumo(s)
Vector sensors measure both the acoustic pressure and the three components of
particle velocity. Because of this, a vector sensor array (VSA) has the advantage of being
able to provide substantially higher directivity with a much smaller aperture than an array of
traditional scalar (pressure only) hydrophones. Although several, most of them theoretic,
works were published from early nineties, only in the last years due to improvements and
availability of vector sensor technology, the interest on field experiments with VSA increased
in the scientific community. During the Makai Experiment, that took place off the coast of
Kauai I., Hawaii, in September 2005, real data were collected with a 4 element vertical VSA.
These data will be discussed in the present paper. The acoustic signals were emitted from a
near source (low frequency ship noise) and two high frequency controlled acoustic sources
located within a range of 2km from the VSA. The advantages of the VSA over traditional
scalar hydrophone arrays in source localization will be addressed using conventional
beamforming.
Descrição
Palavras-chave
Processamento de sinais Sensores 621.38 Vector sensor Source localization Beamforming
Contexto Educativo
Citação
2nd. International Conference on Underwater Acoustic Measurements . - Heraklion, June 2007. - 6 p
Editora
Heraklion