太阳衰减屏的设计及性能评估  

Design and performance evaluation of solar attenuation screen

作　　者：许和鱼 张黎明[2,3] 司孝龙[2,3] 徐伟伟[2,3] 黄文薪[2,3] 刘辉 汪伟 乔延利[2,3] XU Heyu;ZHANG Liming;SI Xiaolong;XU Weiwei;HUANG Wenxin;LIU Hui;WANG Wei;QIAO Yanli(School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, China;Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;Key Laboratory of Optical Calibration and Characterization, Chinese Academy of Sciences, Hefei 230031, China)

机构地区：[1]中国科学技术大学环境科学与光电技术学院,安徽合肥230026 [2]中国科学院安徽光学精密机械研究所,安徽合肥230031 [3]中国科学院通用光学定标与表征技术重点实验室,安徽合肥230031

出　　处：《量子电子学报》2018年第3期359-365,共7页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金;41601388;中国科学院重点实验室基金;CXJJ-16S007~~

摘　　要：基于双太阳漫射板星上定标系统,建立了定标漫射板双向反射分布函数(BRDF)衰减监测模型,介绍了用于衰减入射太阳光通量的太阳衰减屏的结构设计。衰减屏透过率是影响星上定标精度的关键参数之一,需要在发射前精确测量。在实验室利用衰减屏透过率测量系统对其进行多次重复测量,结果表明衰减屏在测试角度范围内透过率为13.8%,测试不确定度优于0.54%(K为2),满足星上定标需求。测试结果可用于建立地面数据库,为后期星上定标提供数据支撑,对保证长期星上定标精度有重要意义。Based on double solar diffusers on-board calibration system, a bidirectional reflectance distribution function（BRDF） attenuation monitoring model of calibration diffuser is established, and the structure design of solar attenuation screen for attenuating the incident sunlight flux is introduced. The attenuation screen transmittance is one of the key parameters that affect on-board calibration accuracy, and it need to be measured accurately before launch. It is measured repeatedly with the attenuation screen transmittance measurement system. Results show that the attenuation screen transmittance is 13.8% within the test angle range, and the test uncertainty is better than 0.54%（K is 2）, which satisfies the requirements of on-board calibration. Test results can be used to establish the ground database, and it can provide data support for the later satellite calibration, which is of great significance to ensure the long-term on-board calibration accuracy.

关 键 词：遥感 星上定标 太阳衰减屏 衰减屏透过率 不确定度 

分 类 号：O439[机械工程—光学工程]