水下航行器辐射噪声仿真及冰下传播规律研究
Modelling and simulation research of radiated noise of underwater vehicle and its propagation characteristic under ice
仇昕阳 1张春雨 2胥强 1彭子龙1
作者信息
- 1. 江苏科技大学能源与动力学院,江苏镇江 212000
- 2. 江苏科技大学能源与动力学院,江苏镇江 212000;上海交通大学机械与动力工程学院,上海 200000
- 折叠
摘要
水下航行器辐射噪声模拟和水声信道中的信号传播特性是水声领域研究的两大热点问题.通过经验公式以及设计FIR滤波器的方法模拟出水下航行器的辐射噪声功率谱.在此基础上结合Bellhop声学工具箱,模拟经过海洋信道传递的辐射噪声信号.结合Burke-Twersky(B-T)冰水模型进行冰水界面下海洋信道的研究.结果显示,功率谱幅值根据水平传播距离和声源深度产生不同程度的衰减.且冰水上边界的存在使声线产生额外的反射和损失,造成接收点功率谱额外衰减20～30 dB.
Abstract
The simulation of radiated noise from underwater vehicles and the signal propagation characteristics in un-derwater acoustic channels are two hot topics in the field of underwater acoustics.Simulate the radiated noise power spec-trum of underwater vehicles through empirical formulas and the design of FIR filters.On this basis,combined with the Bell-hop acoustic toolbox,simulate radiated noise signals transmitted through ocean channels.A study was conducted on the ocean channel under the ice water interface using the Burke-Twersky(B-T)ice water model.The results show that the power spectrum amplitude undergoes varying degrees of attenuation based on horizontal propagation distance and sound source depth.Moreover,the presence of boundaries on ice water causes additional reflection and loss of sound lines,resulting in an additional attenuation of the power spectrum at the receiving point of 20～30 dB.
关键词
冰下信道声传播/Bellhop/水声信道/反射系数Key words
acoustic propagation in under-ice channel/Bellhop/underwater acoustic channel/reflection coefficient引用本文复制引用
基金项目
国家自然科学基金项目(52305110)
中国博士后科学基金项目(2023M742256)
机械系统与振动全国重点实验室课题资助项目(MSV202409)
出版年
2024
NETL
NSTL
万方数据