Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Verification of mean volume backscattering strength from acoustic doppler current profiler by using calibrated sphere method

교정구에 의한 음향 도플러유향유속계의 평균 체적후방산란강도 검토

  • Yang, Yong-Su (Fisheries System Engineering Division, National Fisheries Research & Development Institute) ;
  • Lee, Kyounghoon (Division of Marine Technology, Chonnam National University) ;
  • Lee, Dae-Jae (Division of Marine Production System Management, Pukyong National University) ;
  • Lee, Dong-Gil (Fisheries System Engineering Division, National Fisheries Research & Development Institute)
  • 양용수 (국립수산과학원 시스템공학과) ;
  • 이경훈 (전남대학교 해양기술학부) ;
  • 이대재 (부경대학교 해양생산시스템관리학부) ;
  • 이동길 (국립수산과학원 시스템공학과)
  • Received : 2014.10.14
  • Accepted : 2014.11.26
  • Published : 2014.11.30
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Abstract

ADCPs have been widely used to estimate the dynamic characteristics and biomass of sound scattering layers (SSLs), and swimming speed of fish schools for analyzing SSLs spatial distribution and/or various behavior patterns. This result showed that the verification of the mean volume backscattering strength (MVBS or averaged SV, dB) acquired by the ADCP would be necessary for a quantitative analysis on the spatial distribution and the biomass estimation of the SSLs or fish school when ADCP is used for estimating their biomass. In addition, the calibrated sphere method was used to verify values of each MVBS obtained from 4 beams of ADCP (153.6 kHz) on the base of 3 frequencies (38, 120, 200 kHz) of Scientific echo sounder's split beam system. Then, the measured SV values were compared and analyzed in its Target Strength (TS, dB) values estimated by a theoretical acoustic scattering model.

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References

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