论文部分内容阅读
在恒星辐照度谱模型的基础上,根据卫星轨道理论及恒星数据库建立仿真实验系统,对低轨卫星与中继卫星间(LEO_GEO)、中继卫星间(GEO_GEO)、低轨卫星间(LEO_LEO)三种典型的星间激光链路进行了仿真研究,深入分析了恒星背景噪声对卫星光通信终端跟瞄子系统的影响规律、背景光功率等特性。仿真结果表明:对于视场较大的LEO终端,恒星进入视场的概率约为7%~10%,而对于视场较小的GEO终端,恒星进入视场的概率仅为0.05%,恒星背景光功率约为10-13~10-11W。该项工作对星间激光链路设计、光通信系统参数优化等工作具有一定指导意义。
Based on the star irradiance spectrum model, a simulation experiment system was established based on satellite orbital theory and stellar database to analyze the relationship between LEO_GEO, GEO_GEO, LEO_LEO, ) Three typical inter-satellite laser links are simulated. The influences of stellar background noise on satellite optical communication terminals and the sighting subsystem and the background optical power are deeply analyzed. The simulation results show that the probability of a stellar entering the field of view is about 7% -10% for a LEO terminal with a large field of view, while the probability of a stellar entering the field of view is only 0.05% for a small field of view GEO terminal. The stellar background Optical power is about 10-13 ~ 10-11W. This work is of guiding significance for the design of laser link between stars and the optimization of optical communication system parameters.