一种IGSO卫星轨道维持时的偏航角调整策略

针对倾斜地球同步轨道(IGSO)卫星的轨道维持问题，提出了在轨卫星在各种不同工况及约束下的偏航角调整策略。其目的在于减小偏航角的调整范围以及缩短偏航角调整时间，减小轨道维持过程对卫星业务连续性的影响。分析了偏航角的运动规律，以及升交点赤经对偏航角的影响。在此基础上，根据轨道维持时升交点赤经的不同、太阳高度角范围、轨道控制的时间约束、交叉点位置约束等不同情况，分别给出了卫星轨道维持时偏航角的调整方法及推力器选择方案。对于交叉点位置在中国境内的卫星，可以使偏航角调整范围不超过45°。此方法可应用于在轨卫星轨道维持管理的实践中。

A yaw angle adjustment strategy during IGSO satelliteorbit maintaining#br# #br#

Aiming at the problem of maintaining the orbit of the inclined geo synchronous orbit (IGSO) satellite, a yaw angle adjustment strategy under various working conditions was proposed. The purpose was to reduce the yaw angle adjustment range and shorten the yaw angle adjustment time, and to reduce the impact of the orbit maintenance process on the continuity of satellite services. The law of yaw angle motion and the effect of the right ascension of ascending node on the yaw angle were analyzed. On this basis, the influences of the right ascension of ascending node, the range of the solar altitude angle, the orbit control time, and the position of the intersection on the yaw angle adjustment strategy were analyzed. The method of adjusting the yaw angle and the choice of thruster when the satellite orbit is being maintained were given. For satellites whose intersections are located in China, the range of yaw angle adjustment does not exceed 45°. This method can be applied to the management of satellite orbit maintenance.