For two linear / three linear array mapping cameras, the on-orbit angle change between mapping cameras / star earth cameras is the key to affect the accuracy of mapping / no control point positioning. In this paper, the on-orbit optical axis pointing change of a high-precision stereo mapping camera is evaluated, which is based on the on-orbit monitor system of boresight angle change between front and rear view camera/star cameras. Firstly, the spot image quality evaluation of the boresight position recorder of star earth cameras is carried out. It mainly includes shape, gray value, noise and so on. Secondly, the optical axis pointing stability of star earth cameras is analyzed. Finally, the optical axis pointing accuracy is analyzed. The results show that the performance of boresight position recorder of star earth cameras is good after on-orbit parameter optimization, the boresight pointing accuracy of star earth cameras is better than 0.2″, focus accuracy is better than 0.005mm. It provides a good reference for the follow-up project promotion.
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