Pointing Error Correction for a Moving-Platform Electro-Optical Telescope Using an Optimized Parameter Model

This paper proposes a new optimized parameter model that enhances the pointing accuracy of moving-platform electro-optical telescopes (MPEOTs). The study begins by comprehensively analyzing the error sources, including the telescope and the platform navigation system. Next, a linear pointing correction model is established based on the target positioning process. To eliminate multicollinearity, stepwise regression is applied to obtain the optimized parameter model. The experimental results show that the MPEOT corrected by this model outperforms the mount model, with pointing errors of less than 50 arcsec for approximately 23 h. In the three tests conducted, the modified azimuth error(s) (RMS) were 14.07 '', 12.71 '', and 28.93 '', and the elevation error(s) (RMS) were 12.94 '', 12.73 '', and 28.30 '', respectively.