Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Joseph M. Senne"'
Publikováno v:
The Journal of the Acoustical Society of America. 132:1311-1318
The present paper examines the temporal evolution of acoustic fields by modeling forward propagation subject to sea surface dynamics with time scales of less than a second to tens of seconds. A time-evolving rough sea surface model is combined with a
Publikováno v:
The Journal of the Acoustical Society of America. 130:2530-2530
High frequency underwater acoustic transmissions (>10 kHz) are heavily influenced by scattering from both rough surfaces and bubbles. These interactions are recorded through the prevalence of micro multi-paths in observed data. To study these scatter
Publikováno v:
The Journal of the Acoustical Society of America. 130:2348-2348
Calculations of acoustic rough surface scattering have previously been performed by numerous researchers using parabolic equation models in two dimensions. Approaches have varied from exact solutions that re-map the rough interface to the pressure re
Publikováno v:
WUWNet
High frequency acoustic communication (8--50 kHz) has attracted much attention recently. Significant advancements have been achieved in terms of data rates, communication range, and performance. At these high frequencies, various physical processes,
Publikováno v:
The Journal of the Acoustical Society of America. 128:2334-2334
During the KAM08 experiment 3 h of continuous transmissions (10–20 kHz) were made between a ship‐based source and a moored vertical array. Direct path data show modulations that indicate both constructive and destructive interference of acoustic
Publikováno v:
The Journal of the Acoustical Society of America. 127:1787-1787
During the summer of 2008 an experiment was conducted that included both chirp and M‐sequence transmissions at 16‐kHz center frequency. Source and receiver arrays were located west of Kauai Island HI, along an isobath of about 100 m. Moored therm
Publikováno v:
The Journal of the Acoustical Society of America. 126:2173
Acoustic systems used in underwater communications are sensitive to both scattering and Doppler shifts. In order to assess these sensitivities, an experiment (KAM08) was conducted during summer 2008 under variable environmental conditions. During the