基于严格成像模型的卫星姿态角系统误差补偿

摘要

为消除卫星在轨运动过程中俯仰、偏航、滚动对遥感影像地面定位的影响,建立了卫星姿态角系统误差补偿模型,即在严格成像模型的基础上,对姿态角进行直接调整,以减小定位误差。利用环境减灾-1B（HJ-1B）卫星CCD1相机遥感影像进行分析,在单景影像的定位中,借助于2个地面控制点,将其系统误差减小到原来的1/3,从而验证了模型的有效性,为进一步在轨检校相机内部静态参数提供了前提。%The model of satellite attitude system error compensation is presented to reduce the effect of satellite pitching,yawing and rolling on ground location of the image.The model allows directly adjusting the attitude obtained from the external instrument on board so as to improve the location accuracy.The results show that the model is effective in the example of HJ-1B CCD1 image.With the aid of 2 GCPs（ground control points）,the direct location error is reduced to 1/3.The model provides basis for further camera static parameter calibration.