摘要
在地球同步转移轨道远地点点火期间,星敏可能无法正常工作,提出了数太视场局部修正方法。在星上计算能力充裕、卫星平台稳定的巡航对日模式下,星敏可正常工作,通过规划卫星姿态机动,使太阳在数太视场内的运行轨迹形成一个局部封闭区域,且这个区域需包含远地点点火期间太阳运行路径,地面通过遥测获取姿态机动期间数太和星敏数据,并以星敏数据为基准,采用二维平面拟合的方式完成对数太视场的局部修正。数学仿真结果显示,修正区域内数太测量误差比修正前小1个数量级,证明了该方法的有效性。
In the ignition mode(IM)at the apogee during the geosynchronous transfer orbit(GTO),the star-sensor may not work properly.A method of partial FOV calibration for DSS in GTO is proposed in this paper.With the sufficient calculation margin and the stable attitude,the star-sensor can work smoothly.Through the attitude path planning,the sun trajectory in the DSS s FOV forms a local area which needs to contain the sun trajectory in IM,the data of DSS.The ground station obtains the star-sensor data during the attitude maneuver through telemetry,and the two-dimensional fitting method is used to achieve the partial calibration for DSS based on the star-sensor.The mathematical simulation results show that,the DSS error is one order smaller than that before calibration in the local area,and the method proposed is effective.
作者
叶立军
刘付成
宝音贺西
YE Lijun;LIU Fucheng;BAOYIN Hexi(School of Aerospace Engineering,Tsinghua University,Beijing 100084;Shanghai Aerospace Control Technology Institute,Shanghai 201109;Shanghai Key Laboratory of Aerospace Intelligent Control Technology,Shanghai 201109;Shanghai Academy of Spaceflight Technology,Shanghai 201109)
出处
《飞控与探测》
2022年第3期37-43,共7页
Flight Control & Detection
基金
国家重点研发计划(2016YFB0501003)。
