Proceedings. Vol.1. Sixth Brazilian Symposium on Neural Networks
DOI: 10.1109/sbrn.2000.889731
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Averaging spectra to improve the classification of the noise radiated by ships using neural networks

Abstract: The noise radiated from ships in the ocean contains inforniation about their machinery, being nornially used f o r detection and idetttiflcation purposes. In this work we use a neural classifier to identib the radiated noise received by a hydrophone that was far from the ship. The classification is perJ5ornied in the frequency donzain using a feedforward neural network, which is trained using the backpropagation algorithm. It is shown that the use of an averaged spectral irlforniation during the production pha… Show more

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Cited by 7 publications
(6 citation statements)
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“…4b ). In standard CNN classification tasks, it is assumed that a class can be determined from a single spectrum 43 . Alternatively, the Bayesian decision rule 44 can combine information from multiple spectra.…”
Section: Resultsmentioning
confidence: 99%
“…4b ). In standard CNN classification tasks, it is assumed that a class can be determined from a single spectrum 43 . Alternatively, the Bayesian decision rule 44 can combine information from multiple spectra.…”
Section: Resultsmentioning
confidence: 99%
“…Este procedimento melhora a relação sinal-ruído e aumenta também a eficiência de discriminação, em especial quando utilizados na fase de produção de saídas da rede neural [5].…”
Section: Figura 2: Cadeia De Pré-processamentounclassified
“…So, the implementation of this method is difficult or even impossible. The discriminating features suggested in (Soares-Filho 2000) are based on power spectral density of radiated noise of four different classes of ships. In this paper the background noise has been estimated using Two-Pass Split-Window (TPSW) (Nielsen 1991) and the tonal components were extracted by subtracting the ambient noise from total power spectral density.…”
Section: The Literature Reviewmentioning
confidence: 99%