Impact of subtracting 'Time Varied Gain Background Noise' (TVGBN) on estimates of fisheries resources derived from post-processing acoustic data
文献类型： 外文期刊
作者： Zhang, J. 1 ; Chen, G. -B. 1 ; Chen, P. -M. 1 ; Yu, J. 2 ; Fan, J. -T. 1 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou, Guangdong, Peoples R China
2.Minist Agr, Sci Observing & Expt Stn South China Sea Fishery, Guangzhou, Guangdong, Peoples R China
期刊名称：JOURNAL OF APPLIED ICHTHYOLOGY （ 影响因子：0.892； 五年影响因子：0.956 ）
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年卷期：
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收录情况： SCI
摘要： Echo integration techniques are widely used to estimate abundance and distribution of epipelagic sh (Simmonds and MacLennan, 2005). Background noise received by the transducer can change swiftly and markedly with environmental variation, ship speed and water depth (Watkins and Brierley, 1996; Korneliussen, 2000; Mitson and Knudsen, 2003; Robertis and Higginbottom, 2007). Due to the Time Varied Gain (TVG) compensation function of the echosounder, background noise received by the transducer increases with water depth.
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