| 基于BDRM理论的深海声场快速预报研究 |
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| 引用本文： | 张林,笪良龙,卢晓亭.基于BDRM理论的深海声场快速预报研究[J].应用声学,2007,26(4):239-243. |
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| 作者姓名： | 张林 笪良龙 卢晓亭 |
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| 作者单位： | 海军潜艇学院海军战术水声数据中心,青岛,266071 |
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| 基金项目： | 国防科技预研项目;教育部新世纪优秀人才培养计划 |
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| 摘 要： | 深海存在深海声道和双轴声道两种典型环境，WKBZ简正波方法已实现了深海声道中声场的快速准确预报，而对于双轴海洋声道则存在一定的误差。本文在WKBZ本征函数的基础上，推导出了参考界面相位修正的一致表达式，并将浅海声传播的波束位移射线简正波（BDRM）理论应用于计算双轴海洋声道中的声场，进行了数值模拟并与传统简正波方法进行比较，结果表明应用BDRM理论计算的传播损失具有很高的精度和速度。
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| 关 键 词： | BDRM理论 深海声场 传播损失 |
| 修稿时间： | 2005-03-022006-05-08 |
Fast prediction of deep ocean sound field based on BDRM theory |
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| ZHANG Lin,DA Liang-Long and LU Xiao-Ting.Fast prediction of deep ocean sound field based on BDRM theory[J].Applied Acoustics,2007,26(4):239-243. |
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| Authors: | ZHANG Lin DA Liang-Long and LU Xiao-Ting |
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| Institution: | Underwater Acoustics Data Center, Navy Submarine Academy, Qingdao 266071 |
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| Abstract: | The SOFAR channel and the two-axis underwater channel are typical envi- ronment in the deep ocean.The sound field of the SOFAR channel have been predicted by the WKBZ mode approach accurately and efficiently,while the predicted results of the two-axis underwater channel are not accurate.In this paper,on the basis of the WKBZ eigenfunction,an expression of the upper boundary reflection coefficient is proposed,and the beam-displacement ray-mode(BDRM)theory is applied to calculate the sound field of the two-axis underwater channel.Numerical simulations show that application of the BDRM theory is effective. |
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| Keywords: | BDRM theory Deep ocean sound field Transmission loss |
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