GPS based design of the local clock control system based on the optimally unbiased moving average filter

In this paper we made the simulation steering of the local clock time errors with simple moving average (MA), optimally unbiased moving average (OMA), the two and three-state Kalman filters. The references signal (precise time) was administered by GPS. In this task we have two important activities, estimating and the error control, so the principal parameter in this study is the root mean square error (RMSE) of steering. When steering the GPS-based time error in the local clock with four filters, we found out that, of the filter with the same time constant, the optimally unbiased MA filter dis situated between two and three state Kalman filter