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通过国内基于DFH-4平台研制并成功发射的XX地球同步轨道卫星,利用在轨单结砷化镓太阳电池阵输出电流数据作为统计依据。对造成太阳电池阵输出电流变化的太阳入射角、日地距离因子、太阳帆板驱动机构(SADA)和太阳电池阵温度等因素的逐一分析,消除了以上因素对衰减因子的影响,最终得到太阳电池在轨运行期间的衰减因子拟合表达式,并预计出在轨15 a寿命末期的衰减因子为Fn=0.9377。
Based on the DFG-4 platform developed and successfully launched by the XX geostationary orbit satellites, the use of in-orbit single junction gallium arsenide solar array output current data as a statistical basis. The solar incident angle, the daily-earth distance factor, the solar panel drive mechanism (SADA) and the temperature of solar array caused by the change of the output current of the solar array are analyzed one by one to eliminate the influence of the above factors on the attenuation factor and finally get the sun The attenuation factor of the battery during orbital operation fits the expression and predicts that the attenuation factor at the end of life of the orbital 15 a is Fn = 0.9377.