시험 제작한 기계식 백색소음기 수중음원의 음향적 특성
(주)코리아스칼라
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- 2023.04.05
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- 2014.08
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서지정보
ㆍ발행기관 : 한국수산해양기술학회(구 한국어업기술학회)
ㆍ수록지정보 : 수산해양기술연구 / 50권 / 3호
ㆍ저자명 : 신현옥
영어 초록
This paper describes a prototype mechanical white noise generator has a source level of more than 170.0 dB (re 1Pa at 1 m) at the frequency range of 10 Hz to 100 kHz. The results of performance evaluation of the generator are as follows. The average source level of the generator measured by a step of 15in horizontal (0 to 360。, 25 points) was 185.2 (SD (standard deviation): 2.3) dB (re 1Pa at 1 m). The maximum and minimum source levels were appeared at the frequency range of 2.5 to 5.0 kHz and around 100 kHz, respectively. The average source levels at 0, 90。, 180。and 270 were 162.9 (SD: 10.6), 168.4 (SD: 10.0), 162.1 (SD: 9.1) and 166.5 (SD: 11.1) dB (re 1Pa at 1 m). The average source level measured by a step of 30 in vertical was 184.9 (SD: 2.2) dB (re 1Pa at 1 m). The relative maximum variation width of the source levels in horizontal and in vertical measurement were less than 7.0 dB and 1.0 dB, respectively.
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