红外技术, 2018, 40 (11): 1056, 网络出版: 2018-12-18  

均匀大气中氧气 A带平均透过率快速计算模型

A Fast Calculation Model for Average Transmission of Oxygen A Absorption Band in Homogeneous Atmosphere
作者单位
1 陆军工程大学石家庄校区电子与光学工程系,河北石家庄 050003
2 装甲兵工程学院控制工程系,北京 100072
3 北京系统工程研究所,北京 100101
摘要
利用逐线积分方法,建立了一种均匀大气中氧气 A吸收带平均透过率快速计算模型。模型采用等波数间隔取样,能根据大气温度和压强自动选择谱线线形,并利用直和模型进行快速近似计算 Voigt线形函数。在不同大气模式下设置不同传输路径,利用该模型计算氧气 A带平均透过率与路径长度关系曲线,并将计算结果与 Modtran软件计算结果进行对比。从对比结果可知,不同路径下模型计算的平均氧气透过率最大相对误差均小于 2%,计算时间均小于 1s,具有较高的准确度和计算实时性。计算结果表明该模型能够在均匀大气中对氧气 A带平均透过率进行快速准确计算。
Abstract
A fast calculation model for the average transmission of the oxygen A absorption band in a homogeneous atmosphere is established using the line-by-line integration method. In this model, the sampling interval is set constant, the spectral line profile can be selected automatically according to the pressure and the temperature, and an analytical sum formula is used to approximate the Voigt profile, which improves the efficiency of the calculation significantly. To test the accuracy and adaptability of this proposed model, several different transmission paths are set in three different atmospheric modes, and the proposed model is used to calculate the relationship between the average transmission of the oxygen A absorption band and the path length. The results are compared with the calculations of modtran, which showed that the maximum relative error of the average transmission is less than 2%, and the calculation time is less than 1 s. These calculation results showed that this proposed model can quickly and accurately calculate the average transmission of the oxygen A absorption band in a homogeneous atmosphere.

刘秉琦, 余皓, 闫宗群, 张瑜, 陈一超, 张帅. 均匀大气中氧气 A带平均透过率快速计算模型[J]. 红外技术, 2018, 40(11): 1056. LIU Bingqi, YU Hao, YAN Zongqun, ZHANG Yu, CHEN Yichao, ZHANG Shuai. A Fast Calculation Model for Average Transmission of Oxygen A Absorption Band in Homogeneous Atmosphere[J]. Infrared Technology, 2018, 40(11): 1056.

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