Sukhovich A., Irisson J.O., Simons F.J., Oge A., Hello Yann, Deschamps A., Nolet G. (2011). Automatic discrimination of underwater acoustic signals generated by teleseismic P-waves : a probabilistic approach. Geophysical Research Letters, 38, p. L18605. ISSN 0094-8276.
Titre du document
Automatic discrimination of underwater acoustic signals generated by teleseismic P-waves : a probabilistic approach
Sukhovich A., Irisson J.O., Simons F.J., Oge A., Hello Yann, Deschamps A., Nolet G.
Source
Geophysical Research Letters, 2011,
38, p. L18605 ISSN 0094-8276
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. Citation: Sukhovich, A., J.-O. Irisson, F. J. Simons, A. Oge, Y. Hello, A. Deschamps, and G. Nolet (2011), Automatic discrimination of underwater acoustic signals generated by teleseismic P-waves: A probabilistic approach, Geophys. Res. Lett., 38, L18605, doi:10.1029/2011GL048474.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020]
;
Géophysique interne [066]
