Propagation loss measurements for low frequency sonar in Emerald Basin and Exuma Sound
Keywords:Acoustic wave propagation, Bandwidth, Frequencies, Frequency modulation, Underwater acoustics, Emerald basins, Propagation losses
AbstractPropagation loss measurements for low frequency sonar in Emerald basin and Exuma sound was presented. A low-frequency hyperbolic frequency modulated signal (HFM) was employed to measure propagation loss in both a deep water environment and in a shallow water surface duct environment. The shallow water measurements indicated that loss of signal coherence increases the propagation loss measured, in this case by 5 dB to 10 dB over this range.
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