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地球静止轨道成像式遥感卫星的光学成像相机在轨工作期间需要避免阳光的照射,针对现有滚动轴姿态机动算法存在规避开始时初始角速度过大的问题,提出一种改进的滚动轴机动太阳规避算法。该算法在规避开始与结束时,设计一定的规避角度余量,将建立机动初始状态的过程由达到规避角度的瞬间延伸到角度余量区间中,延长建立初始状态的时间,减小初始角速度。系统数学仿真和测试验证证明该算法简单可靠,在开始规避时,初始角速度由0.2(°)/s减小到0.014(°)/s,整个规避过程平稳,具有良好的工程应用价值。
The geostationary orbit imaging remote sensing satellite optical imaging camera needs to avoid sunshine during the operation of the orbit. In order to solve the problem that the initial angular velocity of the maneuvering algorithm of the existing rolling axis attitude is too large at the beginning, an improved rolling axis maneuvering solar avoidance algorithm. In order to avoid the beginning and the end, this algorithm designs a certain angle of avoidance margin. The process of establishing the initial state of maneuver extends from the angle of avoiding angle to the angle margin interval, and prolongs the time of initial state and decreases the initial angular velocity. The system simulation and test results show that the algorithm is simple and reliable. The initial angular velocity decreases from 0.2 (°) / s to 0.014 (°) / s at the beginning of avoidance, and the whole circumventing process is stable and has good engineering application value.