a method for correcting the prediction of values of signal with time variation , in particular for navigation messages sent by the global satellite navigation systems , includes the following steps for the correction of the predictions of a parameter included in a received signal and varying in time : estimation of the prediction error based on a first batch of values estimated during a determined time period by comparing these values to the values previously predicted for the same determined time period , analysis of the predicted time - oriented series of prediction errors by a method for processing the signal and isolating the contributions of the systematic effects , and extrapolation of the behavior of the contributions of the systematic effects during the time period concerned and correction of the predictions using the duly extrapolated values .