The Analysis and Comparision of Clock Error Prediction Models

In this paper, several common clock error prediction models are studied, the calculation models are derived in detail, and the calculation process of the models parameter is also given. The comparative analysis of several cases of clock error prediction model based on BLOCK IIRM satellite clock is made. The results show that the prediction using the polynomial model, Chebyshev polynomial, with the increase of observation the amount of data used, whether short or medium and long term forecast, the forecast effect will not change. By using the grey system model we need the less observation dataand can improve the speed of modeling. The accuracy is significantly improved. It has obvious advantages on the prediction of satellite clock error, the observation data, forecast period the satellite.