本文对影响大气红外辐射透过率和大气自身的红外辐射因素及计算方法进行了讨论.利用大气传输特性分析软件--LOWTRAN 7分析计算了大气红外辐射的透过率和大气自身的红外辐射,并讨论了大气辐射与吸收对目标与背景红外辐射特性的影响,对利用理论模型得到的目标与背景红外辐射图像进行了修正,获得了比较接近实际的红外模拟热图像.

The factors that affect the IR transmission and IR emission of the atmosphere and the calculated method of the IR transmission andIR emission of the atmosphere are discussed in this paper. The IR transmission and IR emission of the atmosphere are calculated with the atmosphere transmission calculating software-LOWTRAN7 and the effect of atmospheric transmission on IR feature of the target and background are also discussed. The target and its background IR radiation patterns obtained by theory models are improved with the atmospheric IR transmission and emission. The simulated thermal IR images that are similar with the real ones are obtained.