星载面阵成像型红外地球敏感器非均匀性校正
投稿时间:2020-11-02  修订日期:2020-11-17  点此下载全文
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作者单位E-mail
崔维鑫 中国科学院上海技术物理研究所 wxcui@mail.sitp.ac.cn 
李响 航天系统仿真重点实验室 北京仿真中心  
孙浩 中国科学院上海技术物理研究所  
徐增闯 中国科学院上海技术物理研究所 xuzengchuang083087@163.com 
李勇 中国科学院上海技术物理研究所  
于远航 中国科学院上海技术物理研究所  
基金项目:国家重点研发计划(2017YF0111403),中国科学院战略先导专项(XDA15013100)资助.
中文摘要:针对高轨面阵红外地球敏感器在轨温度交变引起的系统非均匀性变化现象,提出一种在轨非均匀性校正的光机设计方案。小型化、轻量化、长寿命的光机系统包括标定黑体组件和光学成像系统。在分析系统非均匀性校正机理和影响的基础上,重点研究了标定黑体组件和光学系统选型及设计之间的关系,并在地面验证了系统非均匀性校正效果。利用在轨地球成像数据对系统的非均匀性进行了效果评估,评估结果表明满足在轨应用要求。
中文关键词:地球敏感器,在轨非均性校正,标定黑体,光学设计
 
Area array infrared earth sensor heterogeneity non-uniformity correction design
Abstract:Aiming at the phenomenon of non-uniformity change caused by on-orbit temperature change of the high-orbit area array infrared earth sensor, an optical-mechanical implementation scheme for on-orbit non-uniformity calibration is proposed. The miniaturized, lightweight, and long-life optomechanical system includes calibration blackbody components and optical imaging systems. The system includes surface source blackbody, motion control mechanism, and optical imaging system. Based on the analysis of the necessity and mechanism of system non-uniformity correction, the relationship between the selection and design of surface source blackbody, motion control mechanism and optical system is mainly studied, and the simulation design of each group of components is realized. On the basis of simulation results, the effects and advantages of system heterogeneity calibration are analyzed and compared. The effect of the heterogeneity of the system is evaluated by using the orbiting earth imaging data, and the evaluation results show that the requirements for on-orbit application are met.
keywords:Infrared  Earth sensor, non-uniformity  correction, calibrated  black body, optical design
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