基于MODIS数据的卫星辐射特性研究  

Research on Radiation Characteristics of Space Targets Based on MODIS Data

作　　者：陈博 穆磊 张彪 许传龙 CHEN Bo;MU Lei;ZHANG Biao;XU Chuan-Long(National Engineering Research Center of Turbo-Generator Vibration,School of Energy and Environment,Southeast University,Nanjing 210096,China;National Key Laboratory of Science and Technology on Test Physics&Numerical Mathematics,Bejing 100076,China)

机构地区：[1]东南大学能源与环境学院火电机组振动国家工程研究中心,南京210096 [2]试验物理与计算数学国家重点实验室,北京100076

出　　处：《工程热物理学报》2021年第4期1009-1014,共6页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51976038,No.51676044);江苏省自然科学基金资助项目(No.BK20201279)。

摘　　要：本文提出了一种结合MODIS数据产品和MODTRAN模型的典型地形条件空间目标红外辐射特性计算方法。考虑了地形条件和大气环境对空间目标的红外辐射特性影响,应用MODIS 3级陆地,海洋,冰雪圈数据产品得到全球温度分布,地形特征分布,将温度及地形条件代入MODTRAN计算得到地表-目标的辐亮度,进而计算目标的外热流以及表达目标的红外辐射特性。之后以全年第189天为例,计算卫星在某一时刻下的各表面的自身辐射、反射辐射、有效辐射。最后计算目标在不同天顶角下辐射强度随方向角的变化趋势。结果表明,空间目标的红外辐射特性与其运行姿态、所在位置的地形条件、表面材料、观测角度均有关系。This paper presents a method for calculating the infrared radiation characteristics of space targets based on MODIS data products and MODTRAN model.Considering the influence of terrain conditions and atmospheric environment on the infrared radiation characteristics of space targets,the monthly average temperature distribution of July,the topographical feature distribution,and the temperature and topographic conditions were substituted into MODTRAN for surface-target radiance calculation using MODIS 3-level land,ocean and cryosphere data products.Then,taking the 189 th day of the year as an example,the self-radiation,reflection radiation and effective radiation of each surface of satellite at a certain time are calculated.Finally,the radiation intensity of the target at different zenith angles is calculated.The results show that the infrared radiation characteristics of space targets are related to their attitude,topographic conditions,surface materials and observation angles.

关 键 词：建模 空间目标 红外辐射特性 MODIS MODTRAN 

分 类 号：O432.1[机械工程—光学工程] O434.11[理学—光学]