基于Kraken简正波模型的浅海声场分析

水声信道的传输特性是影响水声通信系统性能的重要因素。本采用了一种全液态Ｋｒａｋｅｎ简正波模型，对位于浅海信道的目标海区的传播特性进行分析，得到了不同传播条件下信道的传播损失和频率特性图，为水声通信系统的设计提供了理论基础。

An Analysis of Shallow Water Channel Using Kraken Normal Model

Propagation loss of underwater channel, which varies with distance and signal frequency, has great influence on the propagation distance and channel usable width of underwater communication (UWC) system. In this paper, an all fluid Kraken normal model is employed to analyze the propagation characteristics of shallow water channels. The water depths are 78 m and 50 m, the signal frequencies are between 1 kHz and 1.5 kHz. Figs.2 and 3 show the variation of propagation loss with distance at the depth of 78 m and 50 m respectively. Fig.4 shows the variation of propagation loss with frequencies at the depth of 50 m. They show that propagation loss varies greatly with channel conditions and signal frequency.