Abstract
Standby mode is the mode in which the space advanced technology demonstration satellite (SATech) stays for a long time when all the payloads are not working. This mode ensures the energy supply of the satellite on the one hand and the long-term effectiveness of the satellite’s star tracker quaternion on the other hand. Firstly, the target guidance law in standby mode is designed. Secondly, the installation position of the star tracker is designed according to the characteristics of the guidance law. Thirdly, the rationality of the scheme is verified by simulation. Finally, the scheme has been verified to ensure the continuous efficiency of the quaternion of the star trackers and the satellite energy supply.
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