어군의 3차원 음향 산란 특성 측정

DC Field Value Language
dc.contributor.author 이창원 -
dc.contributor.author 강돈혁 -
dc.contributor.author 라형술 -
dc.contributor.author 조성호 -
dc.contributor.author 명정구 -
dc.date.accessioned 2020-07-17T00:52:02Z -
dc.date.available 2020-07-17T00:52:02Z -
dc.date.created 2020-02-11 -
dc.date.issued 2008-06-16 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/29894 -
dc.description.abstract Although various echo-sounders have been used to quantify biomass in fisheries acoustics, the systems used are inherently limited by a narrow acoustic detection area. Recently, various sonar systems have been increasingly used in fisheries acoustics to study school structure and behavior, and for estimating abundance. The three-dimensional (3D) acoustic scattering by a fish school provides indispensable information for fisheries acoustics using sonar systems. We measured the 3D acoustic scattering from a live fish school using a fixed source and moving receiving system. To construct a fish school, 70 black porgy (Acanthopagrus schlegeli) with total lengths ranging from 9 to 14 cm were placed in a small cage underwater. As the source signal, a 200-kHz transducer was positioned such that the fish school was located on the beam axis. The echoes from the fish school were received with a hydrophone at each angle using hemisphere coordinates. On combining the corresponding scattering target strength functions of the fish school, the 3D scattering pattern has no changed with receiving angles. These results can contribute to converting the volume backscattering strength of a fish school to fish biomass by considering fish school direction in 3D coordinates. -
dc.description.uri 1 -
dc.language English -
dc.publisher International Council for the Exploration of the Sea -
dc.relation.isPartOf ICES Symposium on the Ecosystem Approach with Fisheries Acoustics and Complementary Technologies -
dc.title 어군의 3차원 음향 산란 특성 측정 -
dc.title.alternative Measuring the three-dimensional acoustic scattering pattern of a fish school using hemisphere coordinates -
dc.type Conference -
dc.citation.endPage 12 -
dc.citation.startPage 1 -
dc.citation.title ICES Symposium on the Ecosystem Approach with Fisheries Acoustics and Complementary Technologies -
dc.contributor.alternativeName 이창원 -
dc.contributor.alternativeName 강돈혁 -
dc.contributor.alternativeName 명정구 -
dc.identifier.bibliographicCitation ICES Symposium on the Ecosystem Approach with Fisheries Acoustics and Complementary Technologies, pp.1 - 12 -
dc.description.journalClass 1 -
Appears in Collections:
Marine Resources Research Division > Marine Bio-Resources Research Unit > 2. Conference Papers
Marine Domain Management Research Division > Marine Security and Safety Research Center > 2. Conference Papers
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