一种宽带建模方法,用于使用物理信息的神经网络的范围独立的水下声道
Ziwei Huang1, Liang An1, Yang Ye1
1Key Laboratory of Underwater Acoustic Signal Processing of Ministry of Education, Southeast University, Nanjing, 210096, China.
The Journal of the Acoustical Society of America
|November 21, 2024
概括
基于物理学的神经网络能够快速宽带建模水下声道. 与传统方法相比,这种方法显著加快了计算速度,实现了水下声学检测和通信的高精度.
科学领域:
- 水下声学 水下声学
- 计算物理学的计算物理.
- 机器学习是机器学习.
背景情况:
- 对水下声道的准确宽带建模对于检测,定位和通信等应用至关重要.
- 传统的方法 (FEM,FDM,BEM) 是计算密集型的,需要单频计算和限制宽带分析.
- 由于重复的频率计算,现有的方法面临着宽带建模的重大时间挑战.
研究的目的:
- 开发用于水下声道的快速宽带建模方法.
- 克服传统单频方法的计算局限性.
- 为了提高水下声道响应预测的效率.
主要方法:
- 使用物理信息的神经网络 (PINNs) 进行快速宽带建模.
- 将正常模式的模态方程作为神经网络损失函数中的规范化术语集成.
- 在具有液态半无限海底的范围独立的水下环境中应用该方法.
主要成果:
- 通过PINN方法,使用稀疏频率采样点实现快速宽带建模.
- 准确预测水下声道响应的100至300赫兹.
- 与KRAKEN在20公里传播距离相比,计算速度提高了25倍.
- 对声道响应保持了0.15dB的平均绝对误差.
结论:
- 基于物理学的神经网络为宽带水下声道建模提供了计算效率高的解决方案.
- 拟议的方法显著减少了计算时间,同时保持了准确性.
- 这种方法具有很强的潜力,可以推进水下声学检测,定位和通信系统.
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