Bistatic Measurements of Acoustic Waves Scattered from a Statistically Rough Known Surface
作者:
W. D. Boles,
A. K. Fung,
R. K. Moore,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1969)
卷期:
Volume 45,
issue 4
页码: 1040-1044
ISSN:0001-4966
年代: 1969
DOI:10.1121/1.1911499
出版商: Acoustical Society of America
数据来源: AIP
摘要:
The complete bistatic scattering pattern of a rough surface with known statistical properties has been obtained for angles of incidence 10° apart from the vertical down to 30° from grazing using 1‐MHz acoustic waves in water. Bistatic patterns corresponding to other incident angles within this range can easily be interpolated, thus giving rise to what is believed to be the first such complete set of scattering patterns. The surface was formed from a sheet of mild steel, after which the roughness was sampled along profiles and the surface statistics computed. The roughness was such that the standard deviation was approximately12of the incident wavelength and the correlation distance was about 18 wavelengths. The availability of these complete scattering patterns is important to the understanding of the basic scattering process. They allow, for the first time, comparison of the various scattering theories to experimental measurements for other than the plane of incidence. Also pointed out is the transition of the shape of the patterns as the incident angle is changed.
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