面阵空间相机稳像补偿研究  

Image tremble compensation for space camera

作　　者：徐之海[1] 陈跃庭[1] 王琦[2] 刘兆军[2] 李奇[1] 

机构地区：[1]浙江大学现代光学仪器国家重点实验室,浙江杭州310027 [2]北京空间机电研究所,北京100076

出　　处：《红外与激光工程》2007年第5期593-596,共4页Infrared and Laser Engineering

基　　金：国家自然科学基金资助项目(60577047);国家863计划资助项目(863-2006AA12Z107)

摘　　要：分析了由于卫星平台颤震导致的空间相机分辨率下降的原因,阐述了进行空间相机稳像补偿的必要性及国内外现有技术方法与途径。提出了利用高速CCD获得光轴颤震偏移矢量、微机械像面移动补偿的空间相机稳定成像新方法。给出了光路结构设计方案,提出了光轴偏移量探测的软件算法。研究结果表明,该方法的颤震探测精度可以达到0.1～0.2像素,补偿精度可以达到亚像素水平,对空间相机在颤震卫星平台上获取高分辨图像具有一定价值。The reason of the lost of resolving power of space cameras caused by the satellite tremble was analyzed . The necessity and main technical methods currently used for image motion compensation of cameras were reviewed. A new methods of image tremble compensation with high-speed CCD detection of motion vectors and micro mechanic compensation of image plane was proposed. The optical scheme for this method was designed, and the algorithm for detection of trembling optical axis was studied in detail. The result showed that the accuracy of the tremble detection can reach 0.1-0.2 pixel size, and the compensation can be controlled on the scale of sub- pixel. It will be helpful for space cameras to acquire high resolution images on unstable space platforms.

关 键 词：空间相机 像移补偿 稳像 

分 类 号：V447.3[航空宇航科学与技术—飞行器设计]