Infrasonic Noise Measurements in Ocean Using Screened Hydrophones
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概要
- 論文の詳細を見る
Effects of screening a hydrophone with open-cell foams are determined to reduce the level of infrasonic background noise, which is the self-noise probably induced by the presence of flow around the hydrophone, in shallow and deep seas. The result obtained in shallow sea with bottom-mounted geometry shows that the level of background noise could be reduced by more than 20 dB below 10 Hz if the hydrophone is screened. Also, the result of ship noise measurement conducted in deep sea with drifting geometry shows that a maximum background noise reduction of 15 dB could be achieved in the infrasonic band without affecting the true acoustic signals.
- 2010-07-25
著者
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Yoo Hai-Soo
Korea Ocean Research and Development Institute
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Lee Phil-Ho
Agency for Defense Development
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Lee Yong-kuk
Korea Ocean Res. And Dev. Inst.
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Lee Seongwook
Korea Ocean Res. And Dev. Inst.
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Kim Seong-ryul
Korea Ocean Res. And Dev. Inst.
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NA Jungyul
Department of Earth & Marine Sciences, Hanyang University
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Yoon Jong
Division Of Electronic Computer And Telecommunication Engineering Pukyong National University
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Park Yosup
Korea Ocean Research & Development Institute
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Lee Yong-Kuk
Korea Ocean Research and Development Institute, 1270 Sadong, Ansan 426-744, Korea
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Lee Phil-Ho
Agency for Defense Development, P. O. Box 18, Jinhae 645-600, Korea
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Jeong Kap-Sik
Korea Ocean Research and Development Institute, 1270 Sadong, Ansan 426-744, Korea
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Na Jungyul
Department of Environmental Marine Sciences, Hanyang University, 1271 Sadong, Ansan 426-791, Korea
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