一种彩色大面阵航空遥感相机前向像移补偿机构设计及精度分析  

Design and Accuracy Analysis of Area Scan Color CCD Camera's Image Motion Compensation Device

作　　者：惠守文[1] 远国勤[1,2] 刘立国[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033 [2]中国科学院研究生院,北京100049

出　　处：《光电工程》2012年第3期7-11,共5页Opto-Electronic Engineering

基　　金：国家863高技术项目(2007AA701203)

摘　　要：提高彩色大面阵航空遥感相机地面分辨力需设计像移补偿环节以消除工作时CCD像面的像移,本文在分析航空遥感器4种像移补偿方式及像移补偿机构设计原则的基础上,针对某航空遥感器的要求设计了一种前向像移补偿机构,利用等径共轭凸轮机构将电机旋转转化为直线运动,并配合精密直线导轨约束运动自由度。具有传动简单,精度较高的优点,可有效的避免传动误差。分析了原动件输入速度波动、制造误差对像移补偿残差的影响,并对像移补偿总体效果进行了评价。试验数据及数据分析表明,像移补偿机构的补偿残差小到600μm/s,动态目标发生器及外场航拍图像良好,满足使用要求。In order to improve the ground pixel resolution, the image motion compensation device system should be designed to compensate image motion of the CCD plane in the area scan color CCD camera. An image motion compensation mechanism is designed based on analysis of several kinds of image motion compensation methods and discussion on image motion compensation device. Constantdiameter conjugate cam is used to translate the rotation to the line movement. It has the advantages of simple transmission chain and microscopic operation and can reduce the transmission error effectively. The factors that affect the accuracy of image motion compensation are studied and equivalent residual image motions of the compensating system are measured. The measuring results show that the focusing mechanism has a high precision and the error is less than 600 pm/s. Clear color imagine in aerial tests proves that the camera＇s technical parameters can meet using demands

关 键 词：彩色大面阵遥感相机 像移补偿机构 精度分析 

分 类 号：V475.2[航空宇航科学与技术—飞行器设计] V241.03