High-Frequency Sound Interaction with Ocean Sediments and with Objects in the Vicinity of the Water/Sediment Interface & Mid-Frequency Shallow Water Propagation and Scattering
نویسندگان
چکیده
Relative to the first two long-term goals our specific objective for FY07 was to document both the results from the Sediment Acoustics Experiment in 2004 (SAX04) and the associated analysis and modeling techniques that were developed. Those results include (1) measurement of backscattering levels from buried objects at subcritical grazing angles using synthetic aperture sonar (SAS) measurements in order to test buried-object-detection modeling accuracy; (2) identification of the dominant high-frequency backscattering and subcritical penetration mechanisms, including a demonstration that these acoustic processes can be quantitatively modeled based on measured sediment properties; and (3) measurement of sediment attenuation and sound speed over a wide range of
منابع مشابه
Determination of sediments diameter using acoustic waves
The use of acoustic waves in researches related to sea water is of most importance among scientists recently. Since these waves are the only waves, transmitted in water with lowest attenuation and high speed, they can be used in many scientific fields. The main goal of this research is to better understand the physics and mechanisms of sound-seabed interaction, including acoustic penetration, p...
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