caa a22 4500 397551142 CHVBK 20180308164750.0 cr unu---uuuuu 161202e199604 xx s 000 0 eng 10.1006/jmsc.1996.0023 doi (NATIONALLICENCE)oxford-10.1006/jmsc.1996.0023 Wideband sounder for fish species identification at sea [Elektronische Daten] [Manell E. Zakharia, François Magand, François Hetroit, Noël Diner] A brief description is given of both a wideband echo-sounder and data acquisition at sea. Experiments were conducted in the Bay of Biscay at various seasons for four years. Fish species were identified by trawling. Only echoes associated with trawl catches that were monospecific were used in the classification analyses. Species discrimination was based only on the spectral signature of the echoes and did not take into account the characteristics of the school shape. A modelling of the power spectrum of the echo was used to limit the spectral signature to a reduced set of parameters that could be used for classification using a neural network. Thirty-six different monospecific schools, including about 900 echoes, were processed. Three species were considered: sardine (Sardina pilchardus), anchovy (Engraulis encrasicolus), and horse mackerel (Trachurus trachurus). Classification performance had a success rate as high as 75%. © 1996 International Council for the Exploration of the Sea Regular Articles nationallicence fish species classification nationallicence neural network nationallicence spectral analysis nationallicence wideband sounder nationallicence Zakharia Manell E. CPE Lyon, LISA/LASSSO, Laboratoire d'Acoustique Systèmes, Signaux et SOnar, 25 rue du Plat, 69288 Lyon Cedex 02, France aut Magand François CPE Lyon, LISA/LASSSO, Laboratoire d'Acoustique Systèmes, Signaux et SOnar, 25 rue du Plat, 69288 Lyon Cedex 02, France aut Hetroit François CPE Lyon, LISA/LASSSO, Laboratoire d'Acoustique Systèmes, Signaux et SOnar, 25 rue du Plat, 69288 Lyon Cedex 02, France aut Diner Noël IFREMER Centre de Brest BP 70, 29263 Plouzane, France aut ICES Journal of Marine Science Oxford University Press 53/2(1996-04), 203-208 1054-3139 53:2<203 1996 53 icesjms https://doi.org/10.1006/jmsc.1996.0023 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1006/jmsc.1996.0023 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zakharia Manell E. CPE Lyon, LISA/LASSSO, Laboratoire d'Acoustique Systèmes, Signaux et SOnar, 25 rue du Plat, 69288 Lyon Cedex 02, France aut NATIONALLICENCE 700 1- Magand François CPE Lyon, LISA/LASSSO, Laboratoire d'Acoustique Systèmes, Signaux et SOnar, 25 rue du Plat, 69288 Lyon Cedex 02, France aut NATIONALLICENCE 700 1- Hetroit François CPE Lyon, LISA/LASSSO, Laboratoire d'Acoustique Systèmes, Signaux et SOnar, 25 rue du Plat, 69288 Lyon Cedex 02, France aut NATIONALLICENCE 700 1- Diner Noël IFREMER Centre de Brest BP 70, 29263 Plouzane, France aut NATIONALLICENCE 773 0- ICES Journal of Marine Science Oxford University Press 53/2(1996-04), 203-208 1054-3139 53:2<203 1996 53 icesjms Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford