Abstract: The movement of satellite will have an impact on the satellite-ground quantum communication experiment. The distance between satellite and ground is changing at all times, then it will affect the time interval change of the single pulse and the time synchronization of quantum communication. Using the fixed-point quantum communication data to simulate the data of satellite-ground quantum communication, before the satellite launch, it can be used to test the time synchronization performance of satellite signals under the different orbital height. By analyzing the time synchronous scheme, the effect of distance changes on signal light is simulated. Finally, using the practical data of the satellite-ground quantum communication experiment to test and verify the simulation model. The results show that the matching degree of the model is well.experiment. It can be used to test the time synchronization in different orbit level before the satellite launch. By analyzing the time synchronous scheme, the time variation of receiver is simulated. Compared with the actual data and the simulated data, the model accord with facts.

Key words: data simulation