利用光照反射模型分析中高轨人造卫星测光特性

Analysis of Photometric Characteristics of Medium and High Apogee Satellites Based on Light-Reflection Model

利用光照反射模型分析中高轨人造卫星测光特性,以不同形状特性、姿态稳定方式和技术状态的中高轨人造卫星为研究样本,进行可见光波段的时间序列测光观测,并给出了卫星视星等斜距改正和相位角计算的方法。首先,利用球状卫星测光特性实验数据验证了其镜面反射和漫反射光变特性理论模型计算结果,并进一步探讨了复杂形状卫星的光变特征。其次,分别对类柱状受控卫星和失控卫星的理论模型计算结果和实验观测数据进行对比分析。实验结果表明,卫星光变曲线与卫星物理特性,如生存状态、形状特性、姿态稳定方式等相关,可为分析卫星的技术状态及其历史演化过程提供判定依据。

To analyze the photometric characteristics of medium and high apogee satellites based on light reflection model,visual band time series photometry of satellites are employed for studying their physical properties.A sample of satellites in different shape,technical status and stabilization is composed.The accurate time series observations and distance correction method,phase angle calculation method are presented.First,mirror-reflection and diffuse of sunlight on spherical bodies and more complicated shapes are observed and analyzed.Then,experimental results showed that time series photometric light curve can reveal satellite＇s physical characteristics,such as shape, stabilization and health status.It can provide the criteria to determine the technical status and the evolvement of satellite.