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http://dx.doi.org/10.3796/KSFOT.2022.58.3.223

Analysis on the estimating of fishery resources using hydro-acoustics  

PARK, Geunchang (Division of Fisheries Science, Chonnam National University)
HAN, Inseong (Ocean Climate & Ecology Division, National Institute of Fisheries Sciences)
OH, Wooseok (Division of Fisheries Science, Chonnam National University)
OH, Sunyoung (Division of Fisheries Science, Chonnam National University)
LEE, Kyounghoon (Department of Marine Production Management, Chonnam National University)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.58, no.3, 2022 , pp. 223-229 More about this Journal
Abstract
This study investigated the methods of effectively removing noises in the acoustic data collected from the cold water zone of the East Sea, and converted that data into NASC values for comparison and analysis. First, the noises accompanying the acoustic data were divided into background noise, impulse noise, transient noise and attenuated signals according to the pattern characteristics. Then, the NASC values before and after noise removal were compared. As a result, the background noises were found to show the highest difference of 6,946 times in the NASC values before and after removal. The attenuated signals showed that the NASC values were higher after the removal.
Keywords
Noise removal; NASC; Acoustic survey;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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