Modeling fish movement in sonar beam
Thesis (M.S.) University of Alaska Fairbanks, 2002 Enumerating salmon in the Yukon River drainage allows for assessment of annual harvest management guidelines and prediction of long-term salmon population trends in Alaska. Sonar is currently used to enumerate migrating salmon and determine salmon l...
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ftunivalaska:oai:scholarworks.alaska.edu:11122/6429 2023-05-15T18:45:58+02:00 Modeling fish movement in sonar beam Chen, Biao 2002-05 http://hdl.handle.net/11122/6429 en_US eng http://hdl.handle.net/11122/6429 Thesis 2002 ftunivalaska 2023-02-23T21:36:39Z Thesis (M.S.) University of Alaska Fairbanks, 2002 Enumerating salmon in the Yukon River drainage allows for assessment of annual harvest management guidelines and prediction of long-term salmon population trends in Alaska. Sonar is currently used to enumerate migrating salmon and determine salmon location in the river. To understand these results, a model of fish movement is required. This thesis analyzes the existing sonar data on fish movement to construct a model that predicts typical spatial and temporal distribution of fish. A model of the sonar measurement system, which includes target strength, transmission loss, transducer beam pattern, time delay, and noise is developed. This system will simulate a sonar signature for an arbitrary distribution of fish by making several simplifying assumptions. This thesis compares the simulated system sonar signature with assumed fish distribution to predict the accuracy of the sonar fish counting system. Thesis Yukon river Alaska Yukon University of Alaska: ScholarWorks@UA Fairbanks Yukon |
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Open Polar |
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University of Alaska: ScholarWorks@UA |
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ftunivalaska |
language |
English |
description |
Thesis (M.S.) University of Alaska Fairbanks, 2002 Enumerating salmon in the Yukon River drainage allows for assessment of annual harvest management guidelines and prediction of long-term salmon population trends in Alaska. Sonar is currently used to enumerate migrating salmon and determine salmon location in the river. To understand these results, a model of fish movement is required. This thesis analyzes the existing sonar data on fish movement to construct a model that predicts typical spatial and temporal distribution of fish. A model of the sonar measurement system, which includes target strength, transmission loss, transducer beam pattern, time delay, and noise is developed. This system will simulate a sonar signature for an arbitrary distribution of fish by making several simplifying assumptions. This thesis compares the simulated system sonar signature with assumed fish distribution to predict the accuracy of the sonar fish counting system. |
format |
Thesis |
author |
Chen, Biao |
spellingShingle |
Chen, Biao Modeling fish movement in sonar beam |
author_facet |
Chen, Biao |
author_sort |
Chen, Biao |
title |
Modeling fish movement in sonar beam |
title_short |
Modeling fish movement in sonar beam |
title_full |
Modeling fish movement in sonar beam |
title_fullStr |
Modeling fish movement in sonar beam |
title_full_unstemmed |
Modeling fish movement in sonar beam |
title_sort |
modeling fish movement in sonar beam |
publishDate |
2002 |
url |
http://hdl.handle.net/11122/6429 |
geographic |
Fairbanks Yukon |
geographic_facet |
Fairbanks Yukon |
genre |
Yukon river Alaska Yukon |
genre_facet |
Yukon river Alaska Yukon |
op_relation |
http://hdl.handle.net/11122/6429 |
_version_ |
1766237194878451712 |