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| Korneliussen, R; Diner, Noel; Ona, E; Berger, Laurent; Fernandes, P. |
| Acoustic surveys are used to estimate the abundance and distribution of many fish species, and have been based traditionally on data collected at a single acoustic frequency. Although it has been known for some time that the use of additional frequencies can provide information on the nature of the acoustic target, the knowledge and technology required to combine the so-called "multifrequency data" in an appropriate manner has been limited. The use of several transducers of different frequencies is now common on board research vessels and fishing vessels, so multifrequency data are often collected. In order for these data to be combined appropriately, their physical and spatial characteristics from each frequency should be as similar as possible. We detail... |
| Tipo: Text |
Palavras-chave: Species identification; Multifrequency acoustics; Data collection. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-5286.pdf |
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