The solution and affection of LTAN drift on body-mounted solar array

Due to the affections of the factors such as satellite orbit injection error, earth gravity, atmosphere drag, solar perturbation, the LTAN of solar synchronize orbit satellite will drift. This paper takes the high-performance EO satellite "Beijing-1" as an example to analysis its LTAN variation trend for more than 5 years combined with the characteristics of its body-mounted solar array. Yaw strategy has been applied to improve the power generating performance and effectively reduce the passive affection of LTAN Drift on Body-Mounted Solar Array that is useful for long term operation of satellite.