烟台海岸视距紫外光传输大气衰减特性研究

Research on atmospheric attenuation characteristics of line-of-sight ultraviolet propagation along Yantai coast

针对当前紫外光传输过程中大气衰减效应难以量化的问题,在对烟台海岸场景下传统大气辐射传输模型软件(MODerate resolution atmospheric TRANsmission,MODTRAN)适用性验证的基础上,基于幂函数结构建立了视距紫外光传输大气衰减系数的经验表达式。与MODTRAN计算结果的误差较小,证明所构建大气衰减系数经验表达式的合理性和适用性,从而为紫外光通信大气信道特性研究和系统光学设计提供支撑。

For the problems of difficult quantification of atmospheric attenuation effect in the current ultraviolet propagation process,on the basis of the applicability verification of traditional MODerate resolution atmospheric TRANsmission(MODTRAN)software along Yantai coast,the empirical expression of atmospheric attenuation coeffi-cient for line-of-sight(LOS)ultraviolet propagation is established based on the power function structure.The small error in contrast with the MODTRAN computation demonstrates the reasonability and applicability of the established empirical expression of atmospheric attenuation coefficient,it can provide the support for the atmospheric channel char-acteristics research and the system optics design of ultraviolet communication.