| 一种非分层海洋中的声线计算方法 |
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| 引用本文： | 唐俊峰,杨士莪,朴胜春.一种非分层海洋中的声线计算方法[J].振动与冲击,2015,34(4):59-62. |
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| 作者姓名： | 唐俊峰 杨士莪 朴胜春 |
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| 作者单位： | 哈尔滨工程大学 水声技术国防科技重点实验室，黑龙江 150001 |
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| 基金项目： | 哈尔滨工程大学基础研究基金 |
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| 摘 要： | 在浅海环境中,声速剖面和海底深度在水平方向上的变化都会对声传播产生较大的影响。将声速剖面用前几阶经验正交函数来表示,在一定范围的海域各阶经验正交函数系数可以近似为随水平距离线性变化,提出了一种非分层海洋中的声线计算方法,可以计算到达接收水听器的本征声线和传播时间。该方法计算速度快,计算精度较高,可以用于海洋中的声速剖面快速反演。
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| 关 键 词： | 非分层 本征声线 传播时间 经验正交函数 |
A method for calculating acoustic ray in unstratified ocean |
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| TANG Jun-feng,YANG Shi-e,PIAO Sheng-chun.A method for calculating acoustic ray in unstratified ocean[J].Journal of Vibration and Shock,2015,34(4):59-62. |
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| Authors: | TANG Jun-feng YANG Shi-e PIAO Sheng-chun |
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| Affiliation: | State Laboratory of Underwater Acoustic Technology,Harbin Engineering University,Harbin 150001,China |
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| Abstract: | The horizontal variations of sound speed profile and water depth have a significant effect on acoustic propagation in shallow water. This paper presents a method for calculating travel time based on ray theory in unstratified ocean.An efficient algorithm was applied to seek eigen rays arriving at hydrophone.The sound speed profile can be described approximately by empirical orthogonal functions (EOF) with proper precision.The coefficient of the EOF will scale linearly with horizontal distance in certain sea area.The ray method can calculate travel time rapidly with higher precision.The method can be used for fast inversion of sound speed profile in the ocean. |
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| Keywords: | unstratified eigen acoustic ray travel time empirical orthogonal function |
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