The invention relates to the technical field of spacecraft control, and provides an in-orbit fitting estimation method for solar pressure disturbance torque of a stationary orbit satellite, which comprises the following steps: generating an expression formula of the solar pressure disturbance torque by using a Fourier series form; fitting by using the sampled angular momentum data of the momentum wheel to obtain a fitting coefficient in the expression formula corresponding to each fitting period; based on the fitting starting moments corresponding to different fitting time periods in the sunlight pressure period and the fitting starting position of the satellite, the fitting moment corresponding to the satellite at the forecast position is determined; calculating the Julian annual difference between the forecast moment and the fitting moment; determining a target fitting time period matched with the forecast moment according to the Julian annual difference and each fitting time period divided in the sunlight pressure period; and calculating the sunlight pressure disturbance torque at the forecast moment by using the fitting coefficient of the target fitting time period. According to the scheme, the sunlight pressure disturbance torque at the forecasting moment can be estimated in an on-orbit fitting mode, and the requirement for on-orbit control precision of a satellite can be met.

    本发明涉及航天器控制技术领域,本发明提供了一种静止轨道卫星太阳光压干扰力矩的在轨拟合估计方法,包括:利用傅里叶级数形式生成太阳光压干扰力矩的表达公式;利用采样的动量轮角动量数据拟合得到每一个拟合时段对应表达公式中的拟合系数;基于太阳光压周期内不同拟合时段所对应的拟合起始时刻和卫星的拟合起始位置,确定卫星在预报位置处所对应的拟合时刻;计算预报时刻与拟合时刻之间的儒略年差;根据儒略年差和太阳光压周期内划分的各拟合时段确定与预报时刻所匹配的目标拟合时段;利用目标拟合时段的拟合系数计算预报时刻的太阳光压干扰力矩。本方案,能够在轨拟合估算预报时刻的太阳光压干扰力矩,且可满足卫星在轨控制精度的要求。


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    Title :

    In-orbit fitting estimation method for solar light pressure disturbance torque of geostationary orbit satellite


    Additional title:

    静止轨道卫星太阳光压干扰力矩的在轨拟合估计方法


    Contributors:
    LIU XIAOXIANG (author) / SHI HENG (author) / HE GANG (author) / WANG ZUOWEI (author) / JIA MENGYANG (author) / WANG SHUO (author) / CHENG CONG (author) / WU XIAOMING (author) / XU JINGYU (author)

    Publication date :

    2023-03-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / B64G Raumfahrt , COSMONAUTICS




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