红外辐射大气透射率求解模型的建立与分析

红外辐射大气透射率对目标辐射的测量精度影响很大。分析了红外辐射在大气中的传输衰减,建立了红外辐射大气透射率的求解模型。利用编制的红外辐射大气透射率计算程序研究了特定辐射路径下的大气透射率在一日内的变化情况,对不同气象条件和辐射路径下的大气透射率进行了计算,研究了大气温度、相对湿度、路径起始高度、辐射路程、天顶角对大气透射率的影响,并对计算结果进行了分析。计算结果对精确计算红外辐射大气透射率和研究气象条件、路径几何参数对红外辐射大气透射率的影响具有一定的指导意义。

Establishment and analysis of calculation model for atmospheric transmittance of infrared radiation

Atmospheric transmittance of infrared radiation has a significant influence on the measurement accuracy of target radiation.The attenuation of infrared radiation in the atmosphere transmission was analyzed,and the calculation model of atmospheric transmittance of infrared radiation was established.The change of atmospheric transmittance for a given radiation path in one day was studied by using calculation program to calculate atmospheric transmittance of infrared radiation;atmospheric transmittances under the different meteorological conditions or radiation paths were calculated to study the influence of temperature,relative humidity,path starting height,radiation distance,zenith on atmospheric transmittance,and the results were analyzed.The results have certain guiding significance for the accurate calculation of atmospheric transmittance,and the research on the influence of meteorological conditions,geometric parameters of the path on atmospheric transmittance.