关键词: 句芒号卫星, 控制系统, 方案设计, 在轨验证

Abstract: The Ju Mang Satellite is mainly used for carbon monitoring of terrestrial ecosystems, investigation and monitoring of terrestrial ecology and resources, and monitoring and evaluation of national major ecological projects. The Ju Mang control subsystem adopts a high precision attitude determination, high stable attitude control and hybrid trajectory planning attitude maneuver algorithm. According to the demand of the load for the monthly calibration, an inertial scanning mode is designed, which can pass through any space position at any time. According to the requirements of satellite autonomous mission planning, a surface attribute prediction method based on the surface model map is designed. For the first fire detection sensor, a high precision calculation of the geographical longitude and latitude of the fire point is designed, and relative surface linear velocity and the auxiliary cloud judgment information such as the solar zenith angle, satellite zenith angle and relative azimuth angle are provided for the sensor to dynamic fire point prediction. In orbit, the highly reliable fire pointing calculation and false fire point are realized. Based on on orbit data of Ju Mang satellite, the implementation of specific indexes is proposed. Furthermore, the scheme of control system is tested on orbit.

Key words: Ju Mang satellite, control system, scheme design, on orbit test