实测数据参数拟合的红外大气透过率仿真

发布时间：2019-07-05 20:19

【摘要】：计算红外大气透过率的常规方法主要有经验公式法和专业软件计算法,前者存在较大的误差,后者的计算过程复杂且对红外仿真系统的移植和兼容困难,因此,本文基于具体地区多年实测大气数据,利用分子的单线吸收法计算不同温度下的水蒸气和二氧化碳的吸收系数;然后,对不同高度分布的温度、压强以及气溶胶后向散射系数的解析式进行分月拟合。在此基础上,实现红外辐射大气透过率的仿真建模。仿真结果与主流专业软件MODTRAN自定义模式下的精确计算结果很接近,而且本方法使用简单、移植性强,在工程应用上具有一定的参考价值。
文内图片：

图片说明：三月份垂直高度压强分布
[Abstract]:The conventional methods for calculating infrared atmospheric transmittance are empirical formula method and professional software calculation method, the former has great errors, the latter is complex in calculation process and difficult to transplant and compatible with infrared simulation system. Therefore, based on the measured atmospheric data for many years in specific areas, the absorption coefficients of water vapor and carbon dioxide at different temperatures are calculated by using the single-line absorption method of molecules. Then, the analytical expressions of temperature, pressure and aerosol backscattering coefficient distributed at different heights are fitted on a monthly basis. On this basis, the simulation modeling of infrared radiation atmospheric transmittance is realized. The simulation results are very close to the accurate calculation results of the mainstream professional software MODTRAN custom mode, and this method is simple to use and has strong portability, so it has certain reference value in engineering application.
【作者单位】：解放军电子工程学院脉冲功率激光技术国家重点实验室红外与低温等离子体安徽省重点实验室;安徽建筑大学电子与信息工程学院;
【基金】：国家自然科学基金项目(No.61503394) 安徽省自然科学基金项目(No.1408085QF131,15008085QF121) 安徽高校自然科学研究重大项目(No.KJ2015ZD14,KJ2016A149) 脉冲功率激光技术国家重点实验室主任基金资助项目(No.skl2013zr03)资助
【分类号】：TN21

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