【摘要】 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。更多还原

【Abstract】 For the case of image motion in a frame film remote sensing CCD camera as the payload for a sun-synchronous orbit satellite,a set of mechanical image motion compensation(IMC)system was designed.To get the compensation parameters when the remote sensing photographs were captured,a mathematical model for computing the motion velocity was established for a sun-synchronous orbit satellite.Based on the characteristics of space remote sensing,the servomotor was adopted in the system to drive ball screw assembly to accomplish two-dimensional compensation.At last,the result of the simulation experiment based on actual remote sensing situation was performed.By analyzing this specific example and comparing with the statistical data of this device,the results show that the system can compensate the image motion effectively and meet the requirements for remote sensing image and the target displacement of remote sensing image can be less than one third pixel after compensation.更多还原