基于地球椭球的离轴式双线阵相机像移补偿分析  

Image Motion Compensation Analysis of off Axis Dual Line Array Camera Based on Earth Ellipsoid

作　　者：吴佩 WU Pei(Joyou Human Resources(Shanghai)Co.,Ltd.,Shanghai,200000 China)

机构地区：[1]趣无忧人力资源(上海)有限公司,上海200000

出　　处：《科技创新导报》2020年第22期157-158,161,共3页Science and Technology Innovation Herald

摘　　要：离轴式光学系统有着无中心遮拦、无色差、结构紧凑、视场大的应用优势。离轴式双线阵相机视轴与光轴保持分离的状态,地球是一个椭球体,相机视轴和光轴相对应的地物点距离会随着星下点和升交点的地心角产生变化。成像传感器和光轴垂直,对地物点成像,这些影响因素会导致相机像移速度发生变化。采用有效的方式调整偏流角,以相机偏流角均值为主,实现对相机的像移补偿。The off-axis optical system has the advantages of no center block,no chromatic aberration,compact structure and large field of view.The parallax and optical axis of the off-axis dual line array camera are kept separate.The earth is an ellipsoid.The distance between the camera parallax and the object point corresponding to the optical axis will change with the geocentric angle of the point under the stars and thepoint of intersection.The imaging sensor is perpendicular to the optical axis,and images the ground obiecipoints.These factors will lead to the change of camera image motion speed.In order to compensate the image motion of the camera,an effective way is adopted to adjust the bias angle,which is mainly based on the mean value of the camera drift angle.

关 键 词：地球椭球 离轴式双线阵 相机像移补偿 分析 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]