| 平坦海底界面上圆形平板的高频回声特性 |
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| 引用本文： | 文钢,玄兆林,张晓兵.平坦海底界面上圆形平板的高频回声特性[J].武汉理工大学学报(交通科学与工程版),2008,32(6). |
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| 作者姓名： | 文钢 玄兆林 张晓兵 |
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| 作者单位： | 海军工程大学兵器工程系,武汉,430033 |
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| 基金项目： | 国防预研项目资助
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| 摘 要： | 用物理声学方法(Kirchhoff近似)结合镜像原理给出了计算界面附近目标声反射的方法.研究了泥砂类沉积物构成的平坦海底界面上不同倾斜角度的刚性圆形平板某一面在不同入射掠射角的高频回声特性.计算中考虑了圆形平板在某些倾斜角度存在的遮挡影响.结果表明,圆形平板垂直于海底界面时,在大部分掠射角范围内的目标强度最大.若要减小回波强度,则圆形平板应倾斜放置.
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| 关 键 词： | Kirchhoff近似 镜像原理 目标强度 海底界面 |
The Study of High-frequent Echo Characteristics of Disk on Flat Sea Floor |
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| Wen Gang,Xuan Zhaolin,Zhang Xiaobing.The Study of High-frequent Echo Characteristics of Disk on Flat Sea Floor[J].journal of wuhan university of technology(transportation science&engineering),2008,32(6). |
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| Authors: | Wen Gang Xuan Zhaolin Zhang Xiaobing |
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| Institution: | Dept.of Weaponry Eng.;Naval University of Engineering;Wuhan 430033 |
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| Abstract: | The method for evaluation to acoustic scattering from object near an interface has provided based on Kirchhoff approximation combined with image theory.In this article,the high-frequent echo characteristics in different grazing angle of rigid disk laying slantwise on flat sea floor composing by dirty sand have been studied.The shadowing effect has been considered in some tilting conditions of rigid disk.The results show that the target strength is maximum in most grazing angles when rigid disk is normal to ... |
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| Keywords: | kirchhoff approximation image theory target strength sea floor |
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