航天光学相机几何参数星上监测技术  

Geometric Parameters Monitoring Technology for Space Optical Camera

作　　者：王慧 刘薇[2] 于建冬 王柯俨[1] 李云松[1] 刘丹[1] WANG Hui;LIU Wei;YU Jian-dong;WANG Ke-yan;LI Yun-song;LIU Dan(State Key Laboratory of Integrated Service Network,Xidian University,Xi’an 710071,China;State Key Laboratory of Geo-Information Engineering,Xi’an Research Institute of Surveying and Mapping,Xi’an 710054,China;Xi’an Institute of Optics and Precision Mechanics of CAS,Xi’an 710119,China)

机构地区：[1]西安电子科技大学综合业务网国家重点实验室,西安710071 [2]西安测绘研究所地理信息工程国家重点实验室,西安710054 [3]中科院西安光学精密机械研究所,西安710119

出　　处：《光子学报》2018年第10期156-165,共10页Acta Photonica Sinica

基　　金：国家自然科学基金(Nos.61501346;91538101);高等学校学科创新引智基地(No.B08038)资助~~

摘　　要：针对目前航天光学相机在轨定标方法存在更新周期长、时效性不强的问题,提出一种将光学自准直原理应用到星上监测的实时在轨定标方法.在卫星载荷系统内部加装准直光源、呈影面阵CCD和棱镜等器件,将相机焦距、光轴夹角等参数的变化转化为光斑影像的变化,提取并处理光斑影像位置的变化量,求解出线阵相机参数的变化量,实现快速、高效的在轨监测.通过搭建实验平台验证了本文方法的可行性,俯仰和横滚方向参数的监测精度小于1″,测量误差优于0.1″.Aiming at the problem that the state-of-the-art geometric calibration methods have a long update period and low efficiency,a real-time calibration method that applies the optical auto-collimation principle to on-orbit monitoring is proposed.By installing collimated light sources,area-array CCDs,prisms,and other devices inside the satellite load system,changes in the camera parameters are converted into changes in the spot images.By extracting and processing the spot images,the variation of the camera parameters can be solved to achieve a fast and efficient on-orbit monitoring.The feasibility of the proposed method is verified by building an experimental platform,and the monitoring accuracy of parameters in the pitch and roll directionsis are less than 1″,and the measurement error is better than 0.1″.

关 键 词：几何定标 定标 光学自准直 星上监测 航天光学相机 

分 类 号：V19[航空宇航科学与技术—人机与环境工程] V11