Ground simulation analysis of satellite-ground optical communication based on tracking error compensation

In order to analyze the impact of tracking error on the satellite-ground optical communication link,the received optical signal was collected with the LabVIEW.The time-domain characteristics of optical signals at the receiving end were obtained under different tracking conditions according to theoretical analysis and experiment.The experiment results show that the system can be stable when the tracking error is 10μrad and the output power is 23dBm.By contrast,the system becomes unstable when the tracking error is up to 8 0μrad or servo system starts to shake.