摘要
在星载时间延迟积分电荷耦合器件(TDI-CCD)线阵推扫成像相机中,为使TDI-CCD线阵移动方向与目标像移方向一致,并实现光生电荷包转移速度与目标像移速度的匹配以确保成像质量,提出一种用卫星偏航控制实现相机偏流角补偿的方法。导出了星下点、方位偏移和俯仰偏移成像时相机偏流角,以及目标像移速度的解析计算公式,并对偏流角补偿进行了讨论。
To keep the same direction of the array for time delay and integration CCD （TDI-CCD） moving on as the one of the target image moved on, and implement the match the velocity of the charge bag translated and the target image moved for high quality imaging in the camera of satellite-borne TDI-CCD, a method of the camera deviant angle compensation realized by yaw control of the satellite was put forward in this paper. The calculative formulas of the deviant angle for the TDI-CCD camera and the velocity of the target image moved were deduced in variety cases of imaging at satellite ground point, biased yaw, biased azimuth and general condition. The deviant angle compensation of the camera was explained.
出处
《上海航天》
北大核心
2006年第6期10-13,共4页
Aerospace Shanghai
关键词
延迟积分电荷耦舍器件
推扫成像
偏流角
像移速度
像移补偿
Time delay and integration CCD
Push scan on image
Deviant angle
Image moving velocity
Image moving compensation
