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针对搭载在太阳同步轨道卫星上的画幅式遥感相机在成像过程中的目标图像存在相对移动的情况,设计了一套机械像移补偿机构。通过在遥感相机成像过程中获取像移速度,在理论上构建了基于太阳同步轨道卫星遥感特点的像移参数计算模型。根据成像特点,该像移补偿机构采用伺服电机驱动滚珠丝杠的方式实现二维补偿操作。最后,对实际遥感情况进行了数据仿真实验。结果表明:使用该套补偿系统能够有效地对像移进行补偿,像移残差值可以达到低于1/3像素的要求。
Aiming at the situation that the object image of frame telemetry camera mounted on the sun synchronous orbit satellite has a relative movement during the imaging process, a mechanical image shift compensation mechanism is designed. By acquiring the image shift speed in the imaging process of the remote sensing camera, the imaging displacement parameter calculation model based on the satellite remote sensing features of the sun synchronous orbit has been theoretically constructed. According to imaging features, the image shift compensation mechanism uses servo motor-driven ball screw way to achieve two-dimensional compensation. Finally, the simulation of the actual situation of remote sensing data experiments. The results show that using this compensation system can effectively compensate the image shift, and the image shift residual value can reach less than 1/3 pixel.