月球直射辐照度仪同光轴装调及传递定标  

Co-axis Alignment and Radiance Transfer Calibration of Direct Lunar Irradiance Meter

作　　者：王鑫蕊 李新 潘琰[1,2] 李萍 张权 韦玮[1,2] 秦萌萌 WANG Xinrui;LI Xin;PAN Yan;LI Ping;ZHANG Quan;WEI Wei;QIN Mengmeng(Anhui Institute of Optics and Fine Mechanics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学院合肥物质科学研究院安徽光学精密机械研究所,合肥230031 [2]中国科学技术大学,合肥230026

出　　处：《光子学报》2024年第4期158-170,共13页Acta Photonica Sinica

基　　金：国家重点研发计划项目(Nos.2022YFB3903200,2022YFB3903201);国家自然科学基金(No.42105139);中国科学院合肥研究院院长基金(No.YZJJ202309-TS)。

摘　　要：采用激光水平仪与平面反射镜相结合的方式,在实验室模拟月球对追踪相机与探测镜头进行同光轴装调,避免未同光轴导致测试不到信号或者信号太小造成数据不准确的问题,实验结果显示实验室同光轴装调误差在±0.03°以内。为保证仪器定标系数的准确性,采用已溯源于国家计量基准的标准灯传递定标微光灯的方式,利用激光测距仪与激光水平仪、平面反射镜相结合的方式保证传递定标精度,解决了直接使用标准灯定标带来的探测器非线性响应误差和长定标距离误差的难题。为地基对月观测仪器建立高精度的月球辐射模型提供了一种思路与解决方法。With the continuous development of space remote sensing instruments and the further improvement of the quantitative application requirements of remote sensing products,the necessity and importance of high-precision calibration of space remote sensing instruments are increasingly apparent.The moon's reflectance changes by 10-8/year,and its high stability in reflectance,as well as the repeatability of radiance at the same observation geometry angle,make the moon very suitable as a reference radiation source and a hot research topic in the field of radiation calibration at home and abroad.However,the key to achieving this function is the need for a large amount of ground-based observation data to support the establishment of a high-precision lunar radiation model.Therefore,it is urgent to develop radiation instruments that have long-term precise tracking and measurement capabilities on the moon.Accurate test data and laboratory radiation calibration are two key factors that directly affect the acquisition of high-precision ground-based observation data for ground-based lunar radiation instruments.Among them,the tracking camera and signal detection lens being on the same optical axis are the key factors affecting the accuracy of the test,and the low-light radiation calibration coefficient is the key factor affecting the calibration accuracy.The tracking camera's full field of view of the moon's direct irradiance meter developed in this paper is 2.13°×1.60°,and the signal detection lens's full field of view is 1°.Because both fields of view are small,it is necessary to strictly parallel the optical axis of the tracking camera and the signal detection lens.If they are not adjusted to the same optical axis,it will cause the tracking camera to track the moon in real-time,the moon is at the center of the tracking camera's field of view but not in the center of the detection lens's field of view,resulting in no signal being detected or inaccurate data due to the signal being too weak.To ensure the accuracy of test data

关 键 词：辐射定标 月球直射辐照度仪 激光水平仪 同光轴 传递定标 

分 类 号：TP75[自动化与计算机技术—检测技术与自动化装置]