Coherent and diffusive fields of underwater acoustic ambient noise
作者:
V. A. Shchurov,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1991)
卷期:
Volume 90,
issue 2
页码: 991-1001
ISSN:0001-4966
年代: 1991
DOI:10.1121/1.401913
出版商: Acoustical Society of America
关键词: NOISE;SEAS;ANISOTROPY;STATISTICAL DATA
数据来源: AIP
摘要:
In this paper, results of investigations of underwater ambient noise are presented based on statistical analysis of the acoustic pressure and three orthogonal components of particle velocity of a mediumP(t),Vx(t),Vy(t),Vz(t). The mathematical analysis used includes cross‐spectral characteristics, simple coherence functions, phase spectra, and an algorithm to split the noise field into anisotropic and isotropic fields. The above approach is applied to study the anisotropic and isotropic fields of ambient noise in the deep open ocean and in a coastal area. A fundamental feature of the anisotropic field that has been revealed is that the direction of the horizontal component of dynamic noise energy flux is similar to the surface roughness propagation direction.
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