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Automatic discrimination of underwater acoustic signals generated by teleseismic P‐waves: A probabilistic approach

Author(s): Sukhovich, Alexey; Irisson, Jean-Olivier; Simons, Frederik J; Ogé, Anthony; Hello, Yann; et al

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Abstract: We propose a new probabilistic scheme for the automatic recognition of underwater acoustic signals generated by teleseismic P‐waves recorded by hydrophones in the ocean. The recognition of a given signal is based on the relative distribution of its power among different frequency bands. The signal's power distribution is compared with a statistical model developed by analyzing relative power distributions of many signals of the same origin and a numerical criterion is calculated, which can serve as a measure of the probability for the signal to belong to the statistical model. Our recognition scheme was applied to 6‐month‐long continuous records of seven ocean bottom hydrophones (OBH) deployed in the Ligurian Sea. A maximum of 94% of all detectable teleseismic P‐waves recorded during the deployment of the OBHs were recognized correctly with no false recognitions. The proposed recognition method will be implemented in autonomous underwater robots dedicated to detect and transmit acoustic signals generated by teleseismic P‐waves.
Publication Date: 30-Sep-2011
Citation: Sukhovich, Alexey, Jean‐Olivier Irisson, Frederik J. Simons, Anthony Ogé, Yann Hello, Anne Deschamps, and Guust Nolet. "Automatic discrimination of underwater acoustic signals generated by teleseismic P‐waves: A probabilistic approach." Geophysical Research Letters 38, no. 18 (2011). doi:10.1029/2011GL048474.
DOI: doi:10.1029/2011GL048474
ISSN: 0094-8276
EISSN: 1944-8007
Type of Material: Journal Article
Journal/Proceeding Title: Geophysical Research Letters
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

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