Application of the composite roughness model to high‐frequency bottom backscattering
作者:
Darrell R. Jackson,
Dale P. Winebrenner,
Akira Ishimaru,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1986)
卷期:
Volume 79,
issue 5
页码: 1410-1422
ISSN:0001-4966
年代: 1986
DOI:10.1121/1.393669
出版商: Acoustical Society of America
关键词: INCIDENCE ANGLE;BACKSCATTERING;ROUGHNESS;SEDIMENTS;KHZ RANGE 01−100;SEA BED;ACOUSTIC PROPERTIES;REMOTE SENSING
数据来源: AIP
摘要:
The composite roughness model is applied to bottom backscattering in the frequency range 10–100 kHz. For angles near normal incidence, the composite roughness model is replaced by the Kirchhoff approximation which gives better results. In addition, sediment volume scattering is treated, with account taken of refraction and reflection at the randomly sloping interface. In applying the model to published data it is found that sediment volume scattering is dominant in soft sediments except at small and large grazing angles. For coarse sand bottoms, roughness scattering dominates over a wide range of grazing angles. Implications for acoustic remote sensing are discussed.
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