Acoustic propagation loss modeling for Dabob Bay, Wa.

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Author
Mitchell, John R.
Date
1991-09Advisor
Wilson, O.B.
Second Reader
Baker, S.R.
Metadata
Show full item recordAbstract
An analysis of the acoustic sound propagation in a multipath environment in an
ocean at short ranges has been conducted using a Modified Time Delay Spectrometry
(TDS) and an experimental continuous-wave technique. Data from the acoustic test range
at Dabob Bay, WA were analyzed to determine the relative amplitudes of the direct- and
surface-reflected signals. The results show that, at moderate ranges and typical source
and receiver depths, the surface-reflected sound is a significant contributor to the
received sound level. The theory supporting both techniques is presented. Discussions
and conclusions are drawn. Recommendations for future investigation are made.