Mid-high frequency ocean surface-generated ambient noise model and its applications
نویسندگان
چکیده
منابع مشابه
Propagation and Ambient Noise Studies for Ocean Acoustics Applications
Ocean ambient noise has been studied for decades. Much of the interest has been on determining the impact of noise on sonar performance. In this context, noise has generally been considered a nuisance and the research focus has been on methods to measure and predict ocean noise. In this project, the emphasis has been shifted to how ocean noise can be exploited. Results over the past several yea...
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Ambient noise measured in the deep ocean is studied in the context of a search for high frequency transient signals. The spectral shape of the noise is found to be very stable for an extensive data set collected over several months from 49 hydrophones mounted near the bottom of the ocean at ∼1600 m depth. The slopes of the ambient noise spectra above 15 kHz are found to roll-off faster than the...
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The generation of ultra-low frequency acoustic noise (0.1 to 1 Hz) by the nonlinear interaction of ocean surface gravity waves is well established. More controversial are the quantitative theories that attempt to predict the recorded noise levels and their variability. Here a single theoretical framework is used to predict the noise level associated with propagating pseudo-Rayleigh modes and ev...
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Predicting underwater detection capabilities as well as vulnerabilities depends strongly on the characteristics of the ocean acoustic propagation channel. Operational advantages can be obtained by exploiting the ambient noise field to characterize the channel. The long term goal of this research is to determine methods that take advantage of the ambient noise field to extract useful information...
متن کاملThe statistics of ocean-acoustic ambient noise
With the assumption that the ocean-acoustic ambient noise field is a random process that obeys the central limit theorem, many useful statistical properties of subsequent intensity and mutual intensity measurements are readily deduced by respective applications of coherence theory and estimation theory.
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of Korea
سال: 2016
ISSN: 1225-4428
DOI: 10.7776/ask.2016.35.5.340