Application of Kalmen filter for steering UTC(Lab) to UTC

In order to steer master clock in timekeeping laboratory, it is necessary to identify a suitable algorithm for steering UTC(Lab) to UTC for a period of 45 days. By introducing Kalman Filter into the steering, some considerations which are assumed to effect result are encountered. By compared with the result of quadratic polynomial model, Kalman Filter, based on four years historical data and state parameter initialed by 4 order quadratic polynomial model, is able to predict the plausible results in terms of both stability and accuracy.