Based on the analysis of a large number of telemetry data on orbit GEO satellite,the quantitative relationship between the output current of the solar array and the intensity of the incident light is analyzed in this paper.The fitting formula is simple,fitting engineering application,and the relative error is small of about 3％.By verification,the method is suitable for the same kind of satellite.The method can be used in the on orbit management of the GEO satellite,and provides reference for the fault detection and early warning of the solar array.%通过对在轨GEO卫星大量遥测数据的分析,综合分析太阳电池阵输出电流与太阳入射光强等主要影响因素之间的量化关系,得到的太阳电池阵输出电流拟合公式适用于太阳电池阵的异常检测,且其相对误差较小(约为3％).该拟合方法可用于GEO卫星的在轨管理工作,并为太阳电池阵异常检测及预警提供参考.
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