为了分析跟瞄误差对星地光通信链路的影响，采用LabVIEW对接收光信号进行了采集，通过理论分析和实验验证，取得了不同动态误差补偿下接收光终端的信号时域特征。结果表明,出射功率为23dBm、跟瞄误差为10μrad情况下，通信系统可以稳定工作；当跟瞄误差为80μrad或伺服系统出现震荡时，通信系统性能急剧下降。

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 80μrad or servo system starts to shake.