Zhang Hailiang, Yin Hongwei, Jia Honghui, Yang Juncai, Chang Shengli
Science School, National University of Defense Technology, Changsha, Hunan 410073, China.
Opt Express. 2011 Oct 24;19(22):21216-26. doi: 10.1364/OE.19.021216.
This paper studies the effects of the obstacle on non-line-of-sight ultraviolet communication links using multiple-scatter model based on a Monte Carlo method. On the condition that transmitter beam and receiver FOV just pass the top of the obstacle, and ranges is fixed, the received energy density is at its maximum. The path loss increases when the transmitter or the receiver is much near to the obstacle, because the nearby common scattering volumes decrease intensively. The optimal received range decreases with the increasing of the distance between transmitter and obstacle. The predictions are validated with experimental measurements. This work can be used for the guidance of UV system design and network technology to apply in complex surroundings, such as mountain, buildings, etc.
本文基于蒙特卡罗方法，利用多重散射模型研究了障碍物对非视距紫外通信链路的影响。在发射光束和接收器视场刚好越过障碍物顶部且距离固定的条件下，接收能量密度最大。当发射器或接收器距离障碍物很近时，路径损耗会增加，因为附近的共同散射体积会急剧减小。最佳接收距离随着发射器与障碍物之间距离的增加而减小。这些预测通过实验测量得到了验证。这项工作可用于指导紫外系统设计和网络技术在复杂环境（如山、建筑物等）中的应用。
