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针对使用星敏感器进行对地指向精度问题,分析了影响卫星对地指向精度的主要因素,根据卫星轨道误差,推导了轨道根数误差对经度方向和纬度方向上的指向误差方程.分析了轨道根数对指向精度的影响规律.最后对轨道根数误差的影响进行了仿真,仿真结果与分析结果一致.
According to the satellite pointing accuracy problem, the main factors affecting satellite pointing accuracy are analyzed. According to the satellite orbit error, the pointing error equation of orbital root number error to longitude direction and latitude direction is deduced. Root number on the pointing accuracy.Finally, the influence of the root track number error is simulated, and the simulation results are consistent with the analysis results.