为了准确把握近地光通信时大气因素的作用机制和影响效果,有效提升通信质量,考虑针对首要影响因子——大气衰减效应进行建模、分析和仿真.首先细化了衰减效应分类,然后结合大气参数和类别特点建立了相关描述模型;在此基础上,利用大气窗口下的光通信常用波段进行了模型仿真和分析.主要结果表明,长波长激光和高海拔通信有利于光通信的进行,而大高差斜距通信模式则需要规避.这些结论的得出为大气光通信信道模型的建立以及光通信的开展提供了参考和依据,具有一定的指导意义.%In order to accurately grasp the mechanism and the effect of atmospheric factors in optical communication near ground and improve the communication quality effectively,the modeling,analysis and simulation were carried out for the atmospheric attenuation. Firstly,the classification of attenuation effect was refined,and then correlation descrip-tion model was established according to atmospheric parameters and the characteristics of categories;on this basis, simulation and analysis of the model were done by using common optical communication band under the atmospheric window. The results show that the long wavelength laser and communication under high altitude makes for optical com-munication,and the communication mode with elevation and slant distance needs to be avoided. These conclusions provide references and basis for the establishment of atmospheric optical communication channel model and the devel-opment of optical communication.
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