【摘要】 卫星太阳电池阵衰减因子主要由粒子辐照、紫外辐照、微流星体碰撞和冷热交变等衰减因子组成;由于空间环境极其复杂,仅用上述几种因子来描述太阳电池衰减规律并不全面。文章利用某太阳同步轨道卫星在轨6年的太阳电池阵输出功率数据,通过对在轨卫星太阳入射角、日地距离因子、太阳电池阵温度进行归一化计算,最终计算出太阳电池阵在卫星寿命过程中的衰减因子,其中包括粒子辐照衰减因子、紫外辐照衰减因子及其他衰减因子。对衰减因子进行指数函数拟合,两者差值的误差平方和约为0.000127,说明此指数函数可以描述太阳电池阵衰减因子的衰降情况。其他太阳同步轨道卫星利用此指数函数表达式数值及其他参数,代入太阳电池阵输出功率公式进行计算,可得到在轨卫星太阳电池阵输出功率预测值。更多还原

【Abstract】 Si solar array attenuation factors of satellite mainly include particles irradiation attenuation factor,ultraviolet irradiation attenuation factor,attenuation factors impacted by meteoroids and temperature variations.Because the space environment is complex,it is not enough to describe the Si solar array decay laws by using the above factors only.The paper uses the six-year data of the Si solar array output power of a sun synchronous satellite in orbit to normalizedly calculate the incidence angle of the sun,the earth-sun distance factor,and the temperature of the Si solar array,and then calculates the Si solar array attenuation factor including particles irradiation attenuation factor,ultraviolet irradiation attenuation and other attenuation factors.The exponential fitting result of attenuation factor is that SSE is 0.000127,which indicates that this exponential function can be used to describe the Si solar array attenuation factor.The solar array output power prediction values of other satellites in sun synchronous orbit can be obtained by putting the exponential function values and other parameters into the formula of solar array output power.更多还原