| 一种局地简正波快速求解方法——耦合简正波计算 |
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| 引用本文： | 王好忠,王宁,高伟.一种局地简正波快速求解方法——耦合简正波计算[J].中国海洋大学学报(自然科学版),2009,39(1). |
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| 作者姓名： | 王好忠 王宁 高伟 |
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| 作者单位： | 中国海洋大学物理系,山东,青岛,266100 |
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| 基金项目： | 水声技术国防重点实验室基金 |
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| 摘 要： | 通过求解低维矩阵问题替代简正波模型的差分算法,提出一种快速获得局地简正波本征波数和本征函数的方法.数值算例的结果表明:局地简正波本征波数和本征函数与KRAKAN的计算结果吻合较好,利用获得的局地简正波信息计算的相干传播损失与For3D的计算结果的均方误差为1.61 dB,从而验证了方法的可行性.
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| 关 键 词： | 简正波 抛物方程 奇异值分解 变换矩阵 |
The Faster Method for Obtaining Local Normal Modes:Coupled Normal Mode Computation |
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| WANG Hao-Zhong,WANG Ning,GAO Wei.The Faster Method for Obtaining Local Normal Modes:Coupled Normal Mode Computation[J].Periodical of Ocean University of China,2009,39(1). |
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| Authors: | WANG Hao-Zhong WANG Ning GAO Wei |
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| Institution: | Department of Physics;Ocean University of China;Qingdao 266100;China |
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| Abstract: | The normal mode method is common for sound field computation,especially for the case of low frequency and shallow water.As for range-dependant ocean environment,the coupled normal mode method and CMPE(coupled normal mode and parabolic equation method) always share more times for computing the eigen-wavenumbers and eigen-functions of local normal modes.A new faster method for obtaining the eigen-wavenumbers and eigen-functions fastly, in which the conventional difference method is replaced by resolving lower... |
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| Keywords: | normal mode parabolic equation SVD transformation matrix |
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