一种ALOS影像的定向及正射纠正方法  

An Orientation and Rectification Approach to ALOS Image

作　　者：岳庆兴[1,2] 唐新明[2] 邱振戈[2,3] 贾永红[1] 张春玲 

机构地区：[1]武汉大学遥感信息工程学院,武汉430079 [2]中国测绘科学研究院,北京100039 [3]中科院计算技术研究所,北京100080 [4]河南省测绘局,郑州450003

出　　处：《遥感信息》2009年第5期23-27,共5页Remote Sensing Information

摘　　要：以ALOS的任一CCD在瞬时轨道坐标系的俯仰、滚动、偏航3个姿态角和以列坐标为变量的姿态角roll的函数为该CCD的定向元素待求未知数,外方位线元素由辅助文件给定的成像前后各4组位置速度向量及对应时间通过拉格朗日多项式内插得到。首先给出了基本关系式,列立误差方程,然后针对该方法纠正影像存在的困难,给出了实用的检查精度和纠正的方法。结果表明,本方法仅用2个控制点就可以得到很好的稳定解和较高的精度。This paper uses three angles in instantaneous orbit reference frame of any CCD,including yaw、roll and pitch as well as the roll as function of column as the unknown parameters.Line OEs are obtained through Lagrange polynomial interpretation using four groups of position、velocity vectors and its time before and after the imaging,and the vectors and times are giving in the supplementary files.Firstly,the paper puts forward the basic equation,and then establishes error equation.Then in light to the difficulties in rectifying and checking,put forward a useful rectification and check method.The result indicates that this method can obtain a quite steady solution and a high precision.

关 键 词：ALOS 线元素 姿态角改正 拟合 正射纠正 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]