| 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].,2007,26(4):239-243 |
| 基于BDRM理论的深海声场快速预报研究 |
| Fast prediction of deep ocean sound field based on BDRM theory |
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| 中文摘要: |
| 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． |
| 英文摘要: |
| 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. |
| DOI：10.11684/j.issn.1000-310X.2007.04.009 |
| 中文关键词: BDRM理论 深海声场 传播损失 |
| 英文关键词: BDRM theory Deep ocean sound field Transmission loss |
| 基金项目:国防预研项目(51303020401-01);新世纪优秀人才支持计划NCET |
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