根据卫星视星等值的定义, 针对立方体型地球同步轨道目标, 建立有效视星等的计算模型。利用矢量法分析太阳、观察者和目标卫星三者的时空关系, 获得了模型中各参数的取值。通过数值模拟, 计算得到地球同步轨道卫星相对于某地面观测站的视星等, 并绘制视星等和时间的关系变化曲线。最后, 采用卫星跟踪系统和天文望远镜在特定时间对模拟计算结果进行实验验证, 实验结果与理论预期符合。

According to the definition of satellite’s magnitude, for geosynchronous orbit space satellite, the theoretical computing model of star magnitude was built. Space vectors among sun, observation station and target satellite were derived to calculate the time-space relationship parameters. The simulation curves of magnitude vs. time were drawn based on the model and corresponding parameters. The simulation results were verified to match the experiments ones by using satellite targeting system and astronomical telescope. At last, one geosynchronous satellite with 13.4 magnitudes was observed.