本文利用资料[6]作者提出的大气模型和图解法,针对能见度为23公里的晴朗大气,计算了海平面水平路程上,1.5～15微米范围的红外辐射低分辨率光谱透射率随地理位置及季节的变化。尤其着重计算了北纬中纬度夏季晴朗模型大气红外光谱透射率随水平路程的海拔高度、垂直路程长度及倾斜路程天顶角的变化。这些结果,对于欲在中纬度大气环境下应用的红外系统设计和使用者来讲,是有用的。 Based on the atmospheric model and graphic method proposed by author [6], this paper calculates the low-resolution spectral transmittance of infrared radiation in the range of 1.5 ~ 15 μm along the sea level in the clear atmosphere with the visibility of 23 km, Change of season. In particular, the changes of atmospheric infrared transmittance along with the horizontal distance, vertical distance and zenith angle of mid-latitude summer sunny model are calculated emphatically. These results are useful for infrared system designers and users looking to apply at mid-latitude atmospheric conditions.