采用基于Monte-Carlo (蒙特卡洛)方法的多次散射模型对辐射雾环境下非视距紫外光通信传输特性进行模拟分析。选取波长为260 nm的紫外光, 分析了在辐射雾环境中, 当能见度给定时, 紫外光在大气传输信道中的路径损耗与几何尺寸和通信距离的关系, 通过仿真分析得到最优化的几何尺寸参数。分析了不同通信距离下, 紫外光的路径损耗与能见度的关系。结果表明, 在通信距离及收发系统几何尺寸参数已知的情况下, 存在一个能见度的值使得紫外光传输的路径损耗最小。

This paper simulates and analyzes the transmission characteristics of Non-Line-Of-Sight (NLOS) ultraviolet (UV) light in radiation fog environment on the basis of a multiple scattering model by using the Monte-Carlo method. Then it selects a UV light with a wavelength of 260 nm and analyzes the relationship between the path losses and geometric dimensions of UV in atmospheric transmission channels and the communication distances in radiation fog environment when visibility is given, obtaining the most optimized geometric parameters by simulation and analysis. Furthermore, it analyzes the relationship between the UV light path loss and the visibility in different communication distances. The results show that when the communication distance and the transceiver system geometric dimension parameters are known, there exists a value of visibility to enable the path loss of the UV light transmission to be the minimum.