量子卫星上的有些载荷器件对空间背景光较敏感。空间背景光来源主要有地球、月球等。量子卫星在轨运行期间,它与月亮、地球等天体相对位置的变化,使得量子卫星工作轨道上空间背景光分布是随时间变化的。考虑了主要空间背景光源的影响,对量子卫星暗空间背景载荷测试时段进行算例仿真、分析,为量子卫星顺利开展在轨测试和实验提供了技术支持。 Some payload devices on quantum satellites are more sensitive to spatial background light. Space background light source mainly the earth, the moon and so on. During the orbit of a quantum satellite, its relative position with the celestial bodies such as the moon and the earth changes so that the spatial light distribution in the orbit of the quantum satellite changes with time. Considering the influence of the main space background light source, the simulation test and analysis of the background load test period of the quantum satellite in the dark space are carried out, which provides technical support for the smooth development of the orbital test and experiment of the quantum satellite.