摘要
针对LEO(Low Earth Orbit,近地轨道)卫星的太阳电池阵输出功率衰减问题,在分析卫星轨道半长轴、太阳入射角、日地距离等参数变化与影响的基础上,提出按照轨道衰减快慢来区分太阳活动高年与低年,进而通过区分高年与低年,再根据不同季节分别进行太阳电池阵输出功率的衰减估计,而无须做功率归一化。同时,重点关注了夏至前后的最低输出功率的衰减情况,以此作为在轨卫星长期管理中的能源参考,建立平均电流和功率衰减因子估计模型,并结合实际工程数据进行了衰减估计。结果表明,太阳电池阵输出功率的年衰减因子约为-0.012,年衰减率约为1.2%。该结果可应用于在轨卫星长期管理的遥测诊断辅助。
A model of mean current was developed to estimate the output power attenuation factor of Low Earth Orbit（LEO）satellites in different seasons and different solar activity years defined by orbit decay,and with no normalization to solar incidence,distance and temperature to determine the output power attenuation of solar cell arrays,based on analysis of the variation and influence of parameters such as semi-major axis,solar incidence and sunto-earth distance.In Tracking,Telemetry and Command（TTC）management,the lowest output power supplied to the whole satellite to work in health always takes place near summer solstice and it is a very important satellite energy reference.With TTC data,the estimation has shown that when it is near summer solstice,the attenuation factor is about-0.012 and annual power attenuation is about 1.2%.The model has already been used to provide assistance to TTC telemetry diagnosis.
出处
《飞行器测控学报》
CSCD
2017年第3期207-211,共5页
Journal of Spacecraft TT&C Technology
关键词
近地轨道(LEO)卫星
太阳电池阵
输出功率
衰减
估计
遥测
Low Earth Orbit （LEO） satellite
solar cell array
output power
attenuation
estimation
telemetry
作者简介
李强（1976-）,男,硕士,工程师,主要研究方向为卫星测控与在轨管理;I-mail：buffalol26126@126.com
