数字海洋与水下攻防2024，Vol.7Issue(3)：前插1,246-252,8.DOI:10.19838/j.issn.2096-5753.2024.03.001
典型浅海环境参数对声传播损失影响及试验验证
Effects and Experimental Verification of Typical Shallow Sea Environmental Parameters on Acoustic Transmission Loss
摘要
Abstract
Aiming at the problem of the influence of typical shallow sea environmental parameters on acoustic propagation loss,an improved coupled simple positive wave-parabolic equation model based on correction of reflection coefficient of seabed boundary is proposed.An acoustic propagation loss test in typical South China Sea waters is designed and carried.The relative error is less than 4%and the root mean square error is less than 3dB,which verifies the accuracy of the model.Then,five working conditions are designed for four marine environmental parameters,namely sound velocity profile,sea surface state,seafloor sediments and seabed topography,and simulation calculation and analysis are carried out.The results show that the sound velocity profile mainly affects the distribution of the acoustic convergence zone,and the energy of the acoustic convergence zone is mostly concentrated near the seabed and the depth of the sound source under the negative gradient,while the energy of the acoustic convergence zone is mostly concentrated near the sea surface under the positive gradient.The distribution of acoustic propagation loss in shallow sea environment is greatly affected by sea surface state and seafloor sediments.Seabed topography is the main factor affecting underwater acoustic propagation loss,and seabed slope can collect the energy of acoustic wave or disperse it.关键词
声传播损失/浅海环境/典型海洋环境/试验验证Key words
acoustic transmission loss/shallow sea environment/typical marine environment/experimental verification分类
交通工程引用本文复制引用
刘力溟,冯伟佳,计方,李国楠,鹿绍庆..典型浅海环境参数对声传播损失影响及试验验证[J].数字海洋与水下攻防,2024,7(3):前插1,246-252,8.基金项目
国家自然科学基金面上项目"融合海洋环境及浅海信道的大型水下航行体低频线谱特征预报与方法研究"(52371356). （52371356）
