Bellhop模型在水声网络仿真中的实现和应用

Implementation and Application of Bellhop Model in Underwater Acoustic Network Simulation

随着水声技术的发展,水声网络(UANs)因其在海洋监视、灾害预警和海洋安全等领域的表现而备受关注。水声信道是影响UANs性能的重要因素之一,其复杂特性直接影响着UANs相关协议的前期设计和评估,对于协议走向实际应用至关重要。有别于传统理论模型,Bellhop水声信道模型通过跟踪射线计算海洋声场,提供了一种更准确的获得不同海洋环境下信道特性的方法,但该方法不能直接用于网络仿真。针对此,文中在目前主流的网络仿真平台NS3上构建了基于Bellhop的水声信道模型,将高斯射线模型用于水声网络仿真。对比结果表明,该模型能够有效仿真声信号在水下的传播特性,可为实际UANs协议开发提供参考。

With the development of underwater acoustic technology,underwater acoustic networks(UANs)have attracted much attention due to their performance in marine surveillance,disaster warning,and ocean security.The underwater acoustic channel is a crucial factor affecting the performance of UANs,and its complexity directly affects the pre-design and evaluation of UAN-related protocols,which is crucial to the practical application of protocols.Unlike traditional theoretical models,the Bellhop underwater acoustic channel model provides a more accurate method to obtain channel characteristics under different oceanic environments by calculating their acoustic fields via ray tracing.However,it cannot be directly applied to network simulation.This paper implemented a Bellhop underwater acoustic channel model based on NS3,the current most popular network simulation platform,and applied the Gaussian ray model to UAN simulation.The comparison results show that the model can effectively simulate the underwater propagation characteristics of acoustic signals and provide a reference for practical UAN-related protocol development.