深空探测超宽光谱定标黑体源研制  

Prepared of Ultrabroad Spectrum Calibration Blackbody Source for Deep Space Exploration

作　　者：董惠文 张家平 练敏隆[1] 肖大舟[1] 王伟刚[1] 鲁越晖[3] DONG Huiwen;ZHANG Jiaping;LIAN Minlong;XIAO Dazhou;WANG Weigang;LU Yuehui(Beijing Institute of Space Mechanical and Electrical Engineering,Beijing 100094,China;School of Physical Science and Technology,Ningbo University,Ningbo 315211,China;Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China)

机构地区：[1]北京空间机电研究所,北京100094 [2]宁波大学物理科学与技术学院,宁波315211 [3]中国科学院宁波材料技术与工程研究所,宁波315201

出　　处：《光子学报》2024年第2期127-139,共13页Acta Photonica Sinica

基　　金：国家重点研发计划(No.2021YFC2202000)。

摘　　要：针对深空探测超宽光谱定标黑体源的关键技术问题,构建了一种基于优化微结构和纳米超黑涂层的深空探测星上黑体定标源。基于有限元方法仿真,验证了微锥结构不同宽高比与黑体发射率间的对应关系,确定了周期性线阵V槽结构相对于平面结构在黑体发射率方面的提升作用。优化星上黑体源高发射率微结构,优选空间超黑高发射涂层,设计星上黑体源高精度测温系统,进而完成黑体源工程设计。最后,通过星上黑体源发射率计量及实验室辐射定标稳定性测试进行验证。检测结果表明,深空探测超宽光谱定标黑体源具有超宽光谱范围、高发射率、高温度稳定性等特点,其光谱范围为5~50μm,法向平均发射率为0.986,温度稳定性达到0.16 K。该定标黑体源可大幅提升高发射率辐射定标源的光谱范围,为深空探测载荷的在轨高精度星上辐射定标提供支撑。For small objects in deep space exploration,the radiation temperature is about 100 K to 420 K.According to Wien's displacement law,deep space exploration targets cover the ultra-wide spectral range of 5μm to 50μm,and high-precision on-board calibration is the key to the accurate detection of deep space exploration loads.Therefore,it is necessary to develop an on-board calibration source with high emissivity and high temperature stability of ultra-wide spectrum.Aiming at the technical problems of detecting ultra-wide spectrum,high reflectivity and high temperature stability of radiometric calibration blackbody source on ultra-wide spectrum stars in deep space,this paper carries out in-depth research and experimental verification from several aspects such as simulation,key component design and sample detection methods,so as to ensure the engineering realization and application of high-index precision radiometric calibration blackbody source on stars.COMSOL Multiphysics software simulation based on finite element method,microstructure design of blackbody source,emittance detection method of blackbody source and radiation calibration test in laboratory were studied.Firstly,starting from the parameter optimization design of the blackbody surface microstructure,the means of improving the emissivity is transformed from qualitative research to quantitative calculation.The optimal design parameters for wide-spectrum emissivity design are obtained by optimizing the microstructure of the radiating surface of the on-board calibration blackbody source,and then carbon-based ultra-black coating material is selected to further improve the spectral emissivity of the blackbody source.The microstructure optimization junction and the superblack coating of the blackbody source on the star are optimized to increase the emissivity of the blackbody source on the star from 5μm to 50μm in the spectral range to 0.986,in which the ultra-wide spectrum is realized.Depending on the superblack coating,each material has different intrinsic r

关 键 词：深空探测 定标 超宽光谱 高发射率 PID控温 高稳定性 

分 类 号：TL81[核科学技术—核技术及应用]