State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China.
Opt Lett. 2013 Sep 1;38(17):3366-9. doi: 10.1364/OL.38.003366.
Non-line-of-sight (NLOS) ultraviolet communication (UVC) uses the atmosphere as a propagation medium. In previous literature, various scatter propagation models have been derived based on the premise that atmospheric turbulence was ignored and the atmosphere was considered as a turbid medium, also called random scatterers. In this Letter, a NLOS single-scatter propagation model is proposed to describe the singly scattered radiation in a turbulent medium, also called a random continuum, such as the clear atmosphere. The model is established based on the relationship between the scattered power and the characteristics of the random turbulent medium. The scattering cross section is further investigated in terms of different correlation distances and wavelengths. The received power dependence for NLOS UVC is also analyzed for different factors, including refractive-index structure parameter and transceiver range.
非视距（NLOS）紫外通信（UVC）利用大气作为传播介质。在以往的文献中，各种散射传播模型都是基于忽略大气湍流并将大气视为混浊介质（也称为随机散射体）的前提推导出来的。在本信中，提出了一种 NLOS 单次散射传播模型来描述湍流介质（也称为随机连续体，如晴朗大气）中的单次散射辐射。该模型是基于散射功率与随机湍流介质特性之间的关系建立的。进一步从不同相关距离和波长的角度研究了散射截面。还分析了不同因素（包括折射率结构参数和收发器范围）对 NLOS UVC 的接收功率的影响。
