学术
摘 要:
声波在海底界面的反射和透射是海底散射、海底混响、海底目标探测的重要问题。利用Biot多孔介质声传播理论对声波在水一多孔海底界面上的反射和透射进行了分析，具体给出反射声波的反射系数，3种透射声波的透射系数以及声能透射系数随入射波入射角和频率（10～40kHz）的变化关系，分析了各种透射波对透射声能的贡献。多孔海底介质参数分别采用Stoll和Chotiros给出的2组参数进行理论计算。[著者文摘]
文章出处:
《中国海洋大学学报》-2007年37卷4期 -671-675页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1672-5174（2007）04-671-05
Reflection and Refraction of Acoustic Waves at a Water-Porous Sediment Interface
PENG Lin-Hui, ZHAO Yan-Peng, YU Gao-Kun （College of Information Science and Engineering, Ocean University of China, Qingdao 266071, China）
Abstract:
Reflection and refraction of acoustic waves at a sediment interface is an important problem for seafloor scattering, bottom reverberation and the acoustic detection of objects. Following Biot＇s theory, sound reflection and refraction at water-porous sediment interface is analyzed, the dependency of the reflection coefficients, refraction coefficients of three kinds of body waves and coefficients of penetration sound energy flow upon the incident angle and frequency is discussed. The contributions of these kinds of body waves to the penetration sound energy flow are also analyzed. Stoll＇s data and Chotiros＇s data were used as the input parameters of the porous sediment for theoretical calculation.[著者文摘]
Key words:
porous media; seafloor; sound penetration
基金资助:
国家重点基础研究发展计划（2005CB422307）资助
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