浅海水声信道动态响应建模与仿真研究

Dynamic Response Modeling and Simulation in Shallow Water Acoustic Channel

摘要: 水声通信系统必须与海洋通信信道相匹配才能达到良好的通信性能，如何对这样一个复杂多变的信道环境进行建模和仿真成为了一个研究的热点。本文主要研究浅海水声信道的仿真建模方法。利用BELLHOP高斯射线束跟踪法，对浅海信道的多途特性进行了建模；针对传统声线模型在信道动态响应建模上的不足，提出了一种新型的动态响应信道建模方法，仿真了信道的多途多普勒效应。分析了不同条件下信号的频谱规律。仿真结果与理论值相符，证明了模型的有效性。

Abstract: Underwater acoustic communication system must match the communication channel in order to achieve a good performance. How to simulate for such a complex channel has become a hot research. This paper studied the shallow water acoustic channel modeling and simulation method. Using BELLHOP Gauss-ray beam tracing algorithm, modeled the multipath characteristics of the Shallow Water Acoustic Channel. Aiming at the lack of the traditional ray beam method, modeled a dynamic response channel. Simulated and analyzed the Doppler effect of the spectrum. The result showed that the Doppler shift was consistent with the theoretical value, which proved the effectiveness of the design.