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针对地球自转运动形成的星载光机扫描式成像仪的图像畸变问题,详细描述了畸变量与地球纬度及仪器工作参数之间的关系,给出了太阳同步轨道扫描成像仪的畸变量计算公式。针对传统地面畸变校正算法的不足,提出了基于光学补偿扫描和星上软件补偿采样的两种像移补偿方法。详细分析两种方法的特点与可行性,并给出仿真结果。该研究工作对于提高星载光机扫描式成像系统的图像质量具有参考意义。
Aiming at the image distortion problem of the satellite SLM scanning imager formed by the rotation of the earth, the relationship between the distortion and the latitude of the earth and the working parameters of the instrument is described in detail. The formula for calculating the amount of distortion of the solar synchronous orbit scanning imager is given . In order to overcome the shortcomings of traditional ground distortion correction algorithms, two image shift compensation methods based on optical compensation scanning and on-board software compensation sampling are proposed. The characteristics and feasibility of the two methods are analyzed in detail, and the simulation results are given. This work has reference value for improving the image quality of the scanning imaging system of the spacecraft.