수산해양기술연구 (Journal of the Korean Society of Fisheries and Ocean Technology)
- 제19권1호
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- Pages.25-32
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- 1983
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- 2671-9940(pISSN)
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- 2671-9924(eISSN)
수중코오너리프렉터의 초음파반사특성에 관한 연구
Ultasonic Reflection Characteristics of the Underwater Corner Reflector
- Lee, Dae-Jae (National Fisheries University of Busan) ;
- Sin, Hyeong-Il (National Fisheries Universityof Busan)
- 발행 : 1983.03.01
초록
레이다에서 전파반사표식으로 사용하고 있는 코오너리프렉터를 수중 초음파반사표지로 응용하기 위하여, 코오너리프렉터의 수중초음파반사특성을 이론적으로 고찰하고, 28,50,75KHz의 주파수에 대하여 주파수가 높을수록 높았고, 반사지향성은 직경이 증가함에 따라 예리하였다. 2. 직경이 150mm이고, 코오너각이 15
The corner reflector is used to increase the echoing area of radar targets in the air, and it can also be applied to increase the echoing area of the sonar targets under water. As the basic research for this application, the authors investigated the ultrasonic reflection characteristics under water for the corner reflector which was made of aluminum plate. The experiments were made by pulse measuring method with the magnetostrictive ferrite transducers of 28, 50 and 75KHz in the experimental water tank. The results obtained are as follows; 1. The target strength of corner reflectors were increased in proportion to the diameter and were greater at higher frequency of 75KHz than at lower frequency of 28KHz. 2. In the case of 5 corner reflectors of 150mm in diameter which have corner angles of 15
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