Ambient Noise and Signal-to-Noise Profiles in IOMEDEX
NAVAL RESEARCH LAB WASHINGTON DC
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Ambient noise vertical profiles in the Ionian Sea show temporal fluctuations in a few minutes at low, shipping-related frequencies to a few hours at higher, windsea-related frequencies. In the mean, ambient noise levels decrease with increasing depth over the frequency band of study 20-300 Hz. Signal-to-noise profiles also show a fluctuation, depending on the range from source to receiver. These characteristics of deep-water ambient noise are discussed. The results and discussion bear directly on future sonar systems as to optional placement of sensors throughout the water column.
- Acoustic Detection and Detectors