Horizontal Correlation of Ambient Noise near a Sea Route
HE Li 1, LI Zheng-Lin1,2, ZHANG Ren-He1, PENG Zhao-Hui1
1National Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 1000802Nanhai Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Haikou 570206
Horizontal Correlation of Ambient Noise near a Sea Route
HE Li 1;LI Zheng-Lin1,2;ZHANG Ren-He1; PENG Zhao-Hui1
1National Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 1000802Nanhai Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Haikou 570206
摘要Ambient noise data measured in an experiment conducted near the sea route are analysed. It is found that at low frequency, the measured horizontal correlation coefficients at different separations oscillate much larger than that predicted by the classical ambient noise model. The theoretical analyses show that the observed phenomenon is mainly caused by windy noise together with the discrete shipping noise nearby. An ambient noise model is proposed to include the effects caused by both the noise sources and can be used to forecast the ambient noise field near a sea route.
Abstract：Ambient noise data measured in an experiment conducted near the sea route are analysed. It is found that at low frequency, the measured horizontal correlation coefficients at different separations oscillate much larger than that predicted by the classical ambient noise model. The theoretical analyses show that the observed phenomenon is mainly caused by windy noise together with the discrete shipping noise nearby. An ambient noise model is proposed to include the effects caused by both the noise sources and can be used to forecast the ambient noise field near a sea route.
(Signal coherence or fluctuation due to sound propagation/scattering in the ocean)
引用本文:
HE Li;LI Zheng-Lin;ZHANG Ren-He; PENG Zhao-Hui. Horizontal Correlation of Ambient Noise near a Sea Route[J]. 中国物理快报, 2008, 25(2): 582-585.
HE Li, LI Zheng-Lin, ZHANG Ren-He, PENG Zhao-Hui. Horizontal Correlation of Ambient Noise near a Sea Route. Chin. Phys. Lett., 2008, 25(2): 582-585.
[1] Jenson F B, Kuperman W A, Porter M B and Schmidt H 1994 Computation of Ocean Acoustics (New York: AIP) chap 9 p 518 [2] Kuperman W A and Ingenito F 1980 J. Acoust. Soc. Am. 67 1988 [3] Zhang R H, Zhu B X, Wu G Q and Hou W L 1992 ActaAcustica 17 270 (in Chinese) [4] Harrison C H 1996 J. Acoust. Soc. Am. 99 2055 [5] Harrison C H 1997 Appl. Acoust. 51 289 [6] Urick R J 1983 {\t Principles of Underwater Sound (NewYork: McGraw-Hill) chap 7 p 211 [7] Poter M B 1992 The KRAKEN Normal Mode Program(Washington DC: Naval Research Laboratory) [8] Li Z L and Zhang R H 2007 Chin. Phys. Lett. 24471
2008, Vol. 25 
