中文摘要：

文中提出的时变多径水声信道模型基本上实现了对海洋水声信道的模拟，在一定程度上反映了海洋介质的物理特性：对Rayleigh衰落模型的仿真，反映了海洋介质的不均匀性以及信号在水声信道中传输的时变特性。每种信道模型都是对真实信道的近似模拟，必然有其适用的范围，要建立更加完善的信道模型还需要对更复杂的环境参数和信号的多径时变特性做进一步研究。

英文摘要：

A computer simulation method of the multipath and time-variance underwater acoustic channel based on ray theory and statistical properties of the signal is proposed. Computer simulations of the channel with Rayleigh fading are performed, and the results are helpful to understand the characteristics of the underwater acoustic communication channel and to design underwater acoustic communication systems.