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- W4249862286 abstract "Acoustic and environmental measurements were collected in 550 m of water approximately 2.5 km east of San Clemente Island, CA over a 4-day period in August 2002. Continuous-wave and frequency-modulated pulses with center frequencies of 20 and 40 kHz were transmitted over a 1 km distance. Four projectors were located between 10 and 70 m depth, and five receivers were positioned between 40 and 220 m. Data from an anemometer, wave rider buoy, acoustic Doppler current profiler and towed conductivity-temperature-depth array were recorded simultaneously over the test period to characterize the marine environment. The extensive set of environmental data provided a basis for boundary condition and water column characterization. The most significant environmental dynamic was found to be tidally related water current. The environmental conditions were input into a propagation model to predict the acoustic signal structure and propagation behavior in the measured environment. Predictions of acoustic propagation parameters such as time fluctuation, amplitude fluctuation, and effect of bandwidth will be compared to results from on-site acoustic measurements. [Work supported by ONR Code 321US under the ARL Program.]" @default.
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- W4249862286 date "2003-10-01" @default.
- W4249862286 modified "2023-10-18" @default.
- W4249862286 title "Effects of the propagation environment on coherence of underwater broadband acoustic signals" @default.
- W4249862286 doi "https://doi.org/10.1121/1.4779750" @default.
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