基于蒙特卡洛仿真的水下光通信信道的三种相函数比较

Comparison of three phase functions of underwater optical communication channel based on Monte Carlo simulation

近年来水下光通信成为各国研究的热点领域。使用蒙特卡洛方法来模拟水下光信号的传输,实验中使用3种不同的散射相函数来模拟海水的散射特性,通过追踪大量光子在水下光通信信道中的轨迹以及接收情况,来分析3种散射相函数对海水散射特性的模拟情况,对比分析之后发现相比于HG相位模型和TTHG相位模型,FF相位模型可以更好地逼近实测数据。因此得出结论,使用FF散射相函数来搭建水下光通信的信道模型可以更真实地还原海水的散射特性。

In recent years,underwater optical communication has become a hot research field in various countries.In this paper,we use the Monte Carlo method to simulate the transmission of light signals under water.Three different scattering phase functions are used to simulate the scattering characteristics of seawater.By tracking the trajectory and receiving of a large number of photons in underwater optical communication channel,the simulation of the scattering characteristics of seawater is analyzed.Compared with the HG phase model and the TTHG phase model,the FF phase model can approach the measured data better.hence,we can conclude that the channel model of underwater optical communication using FF scattering phase function can more realistically reduce the scattering characteristics of seawater.