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- W1973037880 abstract "The interaction of sound with the sea surface is important for underwater acoustic communications. The high-frequency sound used, 10 kHz and above, is sensitive to surface wave frequencies well above the ∼0.5-Hz upper limit routinely measured by wave buoys. Accurately measuring the surface in the short gravity wave regime is difficult and even the general shape of the spectrum is uncertain. The primary measurement challenge is to disentangle the effects of the instrument, including its supporting structure, from what one is attempting to measure. There have been attempts to combine the copious data at low frequencies and the sparse data at higher frequencies to produce model spectra depending on a few parameters that describe the spectrum in the short gravity wave region and above. In this work we study the sensitivity of the acoustic channel characteristics such as the channel impulse response to our uncertain spectral knowledge. We merge low-frequency surface wave spectra measured at NDBC 44014, with various modeled higher-frequency spectra generated from measured environmental parameters to get unified spectra. For each unified spectrum we generate surface realizations, feed them into a rough surface parabolic equation model to compute a channel impulse response, and compare the impulse responses under different surfaces." @default.
- W1973037880 created "2016-06-24" @default.
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- W1973037880 date "2010-03-01" @default.
- W1973037880 modified "2023-09-26" @default.
- W1973037880 title "Sensitivity analysis of acoustic channel characteristics to sea surface spectral uncertainty." @default.
- W1973037880 doi "https://doi.org/10.1121/1.3384206" @default.
- W1973037880 hasPublicationYear "2010" @default.
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