基于自准直原理的空间光学成像系统在轨几何定标技术  

Techniques for On-orbit Calibration of Space Optical Imaging Systems Based on Auto-collimation

作　　者：赵珩翔 李立波[1] 冯玉涛[1] 李勇[1] 刘薇[3] 武俊强 闫鹏[1] 白清兰[1] ZHAO Hengxiang;LI Libo;FENG Yutao;LI Yong;LIU Wei;WU Junqiang;YAN Peng;BAI Qinglan(Xi'an Institute of Optics Precision Mechanic of Chinese Academy of Sciences,Xi'an 710119,China;University of Chinese Academy of Sciences,Beijing 100049,China;Xi'an Research Institute of Surveying and Mapping,Xi'an 710054,China)

机构地区：[1]中国科学院西安光学精密机械研究所光谱成像技术实验室,西安710119 [2]中国科学院大学,北京100049 [3]西安测绘研究所,西安710054

出　　处：《光子学报》2021年第1期123-130,共8页Acta Photonica Sinica

基　　金：国家自然科学基金(No.41005019);中科院西部青年学者(No.XAB 2016A07);陕西省自然科学基础研究计划(No.2019JQ⁃931)。

摘　　要：通过分析成像原理、仿真光学模型和搭建原理样机,讨论了在实验环境下影响自准直定标系统定标精度的主要因素,提出了定标系统在设计和工作中应注意的主要问题,包括像元尺寸选取、像点位置算法、调焦量计算和系统装调误差。根据分析结果对原理样机的定标误差进行了校正,最终实现原理样机的焦距定标精度小于0.4 mm,X、Y和Z方向旋转的定标精度分别小于0.6″、0.6″和12″,定标精度的相对误差优于0.2%。Through the analysis of imaging principle,simulation of optical model and construction of the principle prototype,the main factors affecting the calibration accuracy of the autocollimation calibration system in the experimental environment are discussed,and the main issues of the calibration system are put forward,which should be noticed in the design and work,including pixel size selection,image point location algorithm,focus amount calculation and system installation error.According to the analysis results,the calibration error of the principle prototype is corrected.Finally,the calibration accuracy of the principle prototype is less than 0.4 mm,and the calibration accuracy of the rotation in X,Y and Z directions are less than 0.6",0.6"and 12"respectively.The relative error of accuracy is better than 0.2%.

关 键 词：几何定标 自准直 空间相机 在轨定标 

分 类 号：V19[航空宇航科学与技术—人机与环境工程] V11