다중 주파수의 체적산란강도 차이를 이용한 에코그램 내에서의 종 분리와 잡음 제거 KCI

Title
다중 주파수의 체적산란강도 차이를 이용한 에코그램 내에서의 종 분리와 잡음 제거
Alternative Title
Species Identification and Noise Cancellation Using Volume Backscattering Strength Difference of Multi-Frequency
Author(s)
강돈혁; 신형철; 김수임; 이윤호; 황두진
KIOST Author(s)
Lee, Youn Ho(이윤호)
Publication Year
2003-10
Abstract
Species identification in hydroacoustic survey is one of the key requirements to estimate biomass of organism and to understand the structure of zooplankton community. Feasibility of species identification using two frequencies (38 and 120 kHz) was investigated on the basis of mean volume backscattering strength difference (MVBS). Virtual echogram technique was applied to two frequencies data sets that obtained from surveys in the Antarctic Ocean and Yellow Sea. Virtual echogram method using MVBS revealed the possibility of species identification, which species identification relying on visual scrutiny of single frequency acoustic data resulted in significant errors in biomass estimation. Through noise cancellation using MVBS, much of the acoustic noise caused by acoustic instruments could be removed in new virtual echogram, and the biomass estimation and data quality was improved.
ISSN
0374-8111
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/40520
Bibliographic Citation
한국수산과학회지, v.36, no.5, pp.541 - 548, 2003
Publisher
한국수산과학회
Keywords
다중주파수; 체적산란강도; 에코그램; 종분리; 잡음제거; Acoustic survey; Two-frequency method; Noise cancellation; Species identification; Volume backscattering strength difference
Type
Article
Language
Korean
Publisher
한국수산과학회
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