지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.6
- 수록면
- 563 - 573 (11page)
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초록· 키워드
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The ship radiated noise level fluctuates by the interference between direct and reflected paths. The effect of sea surface reflection path on interference depends strongly on sea surface roughness. This paper describes error characteristics of ship acoustic signature estimation by sea surface scattering effect. The coherent reflection coefficient which explains a magnitude of sea surface scattering and its resultant interference acoustic field is analyzed quantitatively as a function of a grazing angle, effective surface height, frequency, source-receiver range and depths of source and receiver. Theoretical interference acoustic field is compared with experimental result for two different sea surfaces and five different frequencies by changing source-receiver range. It is found that both matches well each other and a magnitude of interference acoustic field is decreasing by increasing a grazing angle, effective surface height, frequency, and depths of source and receiver and decreasing source-receiver range. For given experimental conditions, the transmission anomaly which is a bias error of ship acoustic signature estimation, is about a range of 1~3 dB. The bias error of an existing ship radiated noise measurement system is also analyzed considering wind speed, source depth and frequency.
목차
등록된 정보가 없습니다.
참고문헌 (13)
참고문헌 신청
1. [단행본] - Ross, D. / 1976 / Mechanics of Underwater Noise / Pergamon Press
2. [단행본] - Urick, R. J. / 1983 / Principles of Underwater Sound / McGraw- Hill
3. [학술지(정기간행물)] - Gray, L. M. / 1980 / Source Level Model for Propeller Blade Rate Radiation for the World's Merchant Fleet / the Journal of the Acoustical Society of America 67 : 516 ~ 622
4. [학술지(정기간행물)] - Trevorrow, M. V. / 2008 / Directionality and Maneuvering Effects on a Surface Ship Underwater Acoustic Signature / the Journal of the Acoustical Society of America 123 (2) : 767 ~ 778
5. [학술지(정기간행물)] - Scrimger, P. / 1991 / Acoustic Source-level Measurements for a Variety of Merchant Ships / the Journal of the Acoustical Society of America 89 (2) : 691 ~ 699
2. [단행본] - Urick, R. J. / 1983 / Principles of Underwater Sound / McGraw- Hill
3. [학술지(정기간행물)] - Gray, L. M. / 1980 / Source Level Model for Propeller Blade Rate Radiation for the World's Merchant Fleet / the Journal of the Acoustical Society of America 67 : 516 ~ 622
4. [학술지(정기간행물)] - Trevorrow, M. V. / 2008 / Directionality and Maneuvering Effects on a Surface Ship Underwater Acoustic Signature / the Journal of the Acoustical Society of America 123 (2) : 767 ~ 778
5. [학술지(정기간행물)] - Scrimger, P. / 1991 / Acoustic Source-level Measurements for a Variety of Merchant Ships / the Journal of the Acoustical Society of America 89 (2) : 691 ~ 699
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