地球自转对光机扫描仪摆扫成像的影响分析

Influence of Earth Rotation on Whiskbroom Imaging of Optical-Mechanical Scanner

地球自转会影响地物相对光机扫描仪的运动。不同纬度的地速不同,地速的变化会造成扫描条带畸变、相邻条带错动和重叠率的变化。文章研究了地球自转的变化规律,从扫描条带畸变、相邻条带错动和重叠率变化3方面因素研究了地速对光机扫描仪成像的影响。最后,针对这些影响提出了校正建议。

Earth rotation influenced movement of ground object relative to optical-mechanical scanner,and the ground speed of different latitude was not same. These caused the scanning banding distortion,the neighboring banding dislocation and the overlapping rate change.The change rule of earth rotation was studied,and the influence of ground speed on optical-mechanical scanner imaging was analyzed from the factors of scanning banding distortion,the neighboring banding dislocation and the overlapping rate change.Correction proposal aimed at these influences was finally put forward.