摘要
以一种机载斜视画幅遥感相机为例,介绍了基于该相机建立像移数学模型的全过程。为交流方便,采用飞行力学国家标准的符号和转角正负,并选择与飞机相关的坐标系;提取相机几何模型,并将机体坐标系建立在相机适当位置,将目标航迹速度经飞机姿态矩阵、相机俯角矩阵、光学系统变换矩阵转换为像面坐标系下的像移速度,由此得到视场中心像移矢量计算公式。定性、定量地分析了像面旋转与姿态像移之间的关系;基于异速像移产生的原因,论证了像面旋转机构在姿态像移补偿过程中的作用。
Taking a Long Range Oblique Photography（LOROP） frame camera for an example, the whole course of establishing image motion mathematical model is given. In order to communicate conveniently, national flight mechanics standard is used to describe symbols and plus-minus of rotation angle,and to choose coordinates related to airplane. Then a camera geometrical model is extracted, the body coordinate at a proper position is established and the image motion vector is computed by flight attitude matrixes, camera depression matrixes and optical system transformation matrixes to obtain the equation of center image motion vector. Finally, the relation between image revolution and attitude im- age motion is analyzed, and the effect of image revolution in attitude image motion compensation is presented.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2007年第9期1432-1438,共7页
Optics and Precision Engineering
基金
国防预研项目
关键词
遥感相机
像面旋转
姿态像移
坐标变换
姿态矩阵
remote sensing camera
image revolution
attitude image motion
coordinate transformation
attitude matrix
