트롤 모니터링 시스템의 개발에 관한 연구 ( 1 ) - 트롤 전개판의 전개 간격 계측 시스템 -
(주)코리아스칼라
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- 2023.04.05
- 최종 저작일
- 1997.08
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서지정보
ㆍ발행기관 : 한국수산해양기술학회(구 한국어업기술학회)
ㆍ수록지정보 : 수산해양기술연구 / 33권 / 3호
ㆍ저자명 : 신현옥, 이춘우
영어 초록
We make an ultrasonic system as a trial to measure the distance between trawl doors, and carried out a water tank (24× 24m, water depth 1 m) experiment for confirming the practical use of the system in October 1996. This system calculates the distance between the pinger (50 kHz) and the transponder (50 kHz/70 kHz) attached each one on the trawl door by measuring the time-difference of receiving with two channels receiver on the trawler. This paper assums that both the length of the warp from the stern to the trawl door is same. At results the system shows a good relation between the distance and the time-difference of receiving while the location of the pinger is moved in variously in the water tank, and it was found that the method of measuring techniques on the prototype system could be applied to the measurement of the trawl door opening in the field experiment.
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