一种低轨卫星应对月影干扰方法

针对2012年5月21日某低轨卫星受到月影干扰导致控制系统工作异常的问题,分析了月影现象产生原理,结合月影期间影响卫星安全的异常原因,系统分析了卫星平台能源预警机制与驱动控制系统中的太阳帆板控制方案,提出了某型号低轨卫星应对月影现象安全运行的处置方法和后续同类型卫星能源管理修改建议.该方法分别在2012年11月9日、2013年5月10日得到应用,在月影期,该卫星太阳阵输出电流从4.5A下降到2A,太阳帆板对日转动正常,能源管理系统未出现报警.应用结果说明,该方法能够有效地解决同类型卫星月影干扰的问题.

Method to Solve the Disturbance of Moon Shadow on LEO Satellites

The theory for moon shadow and its possible hazards to the safety of satellites are analyzed to solve an anomaly of the control system of an LEO （Low Earth Orbit） satellite during moon shadow on May 21,2012.Following further analysis of the early warning mechanism for power management and solar array drive program,this paper proposes a method for moon shadow handling for safe operation of LEO satellites and modification of the power management systems of the same series of satellites.Using the method during moon shadow on November 9,2012 and May 10,2013,the solar array followed the sun all the time and no anomaly was encountered by the power management system while the output current of the solar array dropped from 4.5 A to 2 A.The results of application show that the method successfully solves interference of moon shadow on LEO satellites.