caa a22 4500 397551371 CHVBK 20180308164751.0 cr unu---uuuuu 161202e199604 xx s 000 0 eng 10.1006/jmsc.1996.0056 doi (NATIONALLICENCE)oxford-10.1006/jmsc.1996.0056 A split-beam echo-counting model for riverine use [Elektronische Daten] [Timothy J. Mulligan, Robert Kieser] As part of a project to evaluate a side-looking, split-beam acoustic system for enumerating migrating salmon in the Fraser River in British Columbia, Canada, a stochastic model is being developed to estimate the numbers of fish migrating upstream past the acoustic site. The model exploits the unique ability of a split-beam system to measure the three-dimensional position of resolved point source targets and to track the target trajectories through the beam. The problem of non-uniform detection probability combined with non-uniform fish density over the beam cross-section is addressed by the model. The model estimates the number of migrating salmon using the observed echo distribution, the trajectories of tracked fish, and the detection probability. © 1996 International Council for the Exploration of the Sea Regular Articles nationallicence echo counting nationallicence model nationallicence riverine nationallicence split-beam nationallicence Mulligan Timothy J. Department of Fisheries and Oceans, Pacific Biological Station, Nanaimo, B.C. Canada, V9R 5K6 aut Kieser Robert Department of Fisheries and Oceans, Pacific Biological Station, Nanaimo, B.C. Canada, V9R 5K6 aut ICES Journal of Marine Science Oxford University Press 53/2(1996-04), 403-406 1054-3139 53:2<403 1996 53 icesjms https://doi.org/10.1006/jmsc.1996.0056 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1006/jmsc.1996.0056 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mulligan Timothy J. Department of Fisheries and Oceans, Pacific Biological Station, Nanaimo, B.C. Canada, V9R 5K6 aut NATIONALLICENCE 700 1- Kieser Robert Department of Fisheries and Oceans, Pacific Biological Station, Nanaimo, B.C. Canada, V9R 5K6 aut NATIONALLICENCE 773 0- ICES Journal of Marine Science Oxford University Press 53/2(1996-04), 403-406 1054-3139 53:2<403 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