Calibration of Angular Systematic Errors for High Resolution Satellite Imagery

The object positioning accuracy from high resolution satellite imagery is strongly relevant to image attitude data accuracy,but the attitude data have generally systematic errors and the object location becomes unreliable.The angular systematic error calibration model is stricter than constant angular error calibration model,based on the rigorous geometric processing model of high resolution satellite remote sensing imagery.The calibration model was tested on SPOT-5 and CBERS-02B images and both have proved its correctness.After compensating the angular systematic errors of images,the direct georeferencing accuracy can reach ±(2～3) pixels,which is much better than results of constant angular calibration.