Analysis of Geopositioning of Satellite Three\|Line Array CCD Caused by Drift Angle

The impact both satellite three\|line array CCD and control geopositioning because of drift angle correction and residual drift angle is analyzed.The method that eliminates impact of residual drift angle in the control geopositioning of satellite three\|line array CCD is proposed. The experimental result shows that the control geopositioning of satellite three\|line CCD has great impact because of residual drift angle. It must be corrected in practical applications.