1.哈尔滨工程大学 水声技术全国重点实验室,黑龙江 哈尔滨 150001
2.海洋信息获取与安全工业部重点实验室(哈尔滨工程大学) 工业和信息化部,黑龙江 哈尔滨 150001
3.哈尔滨工程大学 水声工程学院,黑龙江 哈尔滨 150001
[ "汪磊, 男, 博士研究生" ]
[ "黄益旺, 男, 教授, 博士生导师" ]
收稿:2025-06-05,
网络首发:2025-06-23,
纸质出版:2025-08-05
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汪磊, 黄益旺, 赵振星, 等. 粗糙海底界面的声散射及声传播起伏研究[J]. 哈尔滨工程大学学报, 2025,46(8):1522-1529.
Lei WANG, Yiwang HUANG, Zhenxing ZHAO, et al. Acoustic scattering and propagation fluctuation of rough seabed interface[J]. Journal of Harbin Engineering University, 2025, 46(8): 1522-1529.
汪磊, 黄益旺, 赵振星, 等. 粗糙海底界面的声散射及声传播起伏研究[J]. 哈尔滨工程大学学报, 2025,46(8):1522-1529. DOI: 10.11990/jheu.202506006.
Lei WANG, Yiwang HUANG, Zhenxing ZHAO, et al. Acoustic scattering and propagation fluctuation of rough seabed interface[J]. Journal of Harbin Engineering University, 2025, 46(8): 1522-1529. DOI: 10.11990/jheu.202506006.
针对不平整海底界面声散射以及其造成的声传播起伏问题,本文使用简正波理论建立了包含粗糙海底散射的稳态海洋声场模型,给出了振幅和相位起伏率的数学表达式,仿真分析了Pekeris波导环境下的声场传播损失以及不同情况下的振幅起伏率和相位起伏率。仿真结果表明:在使用Lambert定律描述海底声散射时,由散射造成的随机声场的传播损失在水平方向上随距离增加而缓慢变大,而在深度方向上较为稳定;相较于相位起伏率,振幅起伏率对信噪比的变化更为敏感;随着海底粗糙度的不断增大,振幅和相位的起伏率会趋近于0。本文建立的模型以及对声传播起伏的分析可以为海洋声场的计算和相应的信号处理工作提供有力的指导。
To address the issue of acoustic scattering at rough seabed interfaces and the resulting fluctuations in sound propagation
this study employed normal mode theory to establish a steady-state ocean acoustic field model that incorporates rough seabed scattering. Furthermore
mathematical expressions for the amplitude and phase fluctuation rates were derived. Simulations were performed to analyze the transmission loss of the acoustic field in a Pekeris waveguide environment
as well as the amplitude and phase fluctuation rates under varying conditions. The simulation results reveal that when Lambert's law was applied to describe seabed acoustic scattering
the transmission loss of the random acoustic field caused by scattering increased slowly with distance in the horizontal direction
while remaining relatively stable in the vertical direction. It was observed that compared with the phase fluctuation rate
the amplitude fluctuation rate was more sensitive to variations in the signal-to-noise ratio. Moreover
as the roughness of the seabed increased
the amplitude and phase fluctuation rates approached zero. The model established in this study
along with the presented analysis of acoustic propagation fluctuations
can provide valuable guidance for the calculation of ocean acoustic fields and related signal processing work.
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