Propagation loss measurements for low frequency sonar in Emerald Basin and Exuma Sound

Sean Pecknold, James Theriault, David Hazen

Abstract


Propagation 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.

Keywords


Acoustic wave propagation; Bandwidth; Frequencies; Frequency modulation; Underwater acoustics; Emerald basins; Propagation losses

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