Short-term combined clock correction forecasting method under condition of uncertain forecasting duration

TL;DR: In this article, a short-term combined clock correction forecasting method under a condition of uncertain forecasting duration is presented, and the method comprises the following steps that: obtaining an original clock correction sequence, and carrying out differential processing; according to the original clock corrections sequence, calculating a clock correction data quality factor, and determining the forecasting duration; adopting at least two types of clock corrections forecasting methods to carry out forecasting learning; calculating the weight value of each clock correction forecast method; calculating a combined clock corrections forecast value; judging whether time synchronization is established again or not at any time in

Abstract: The invention discloses a short-term combined clock correction forecasting method under a condition of uncertain forecasting duration. The method comprises the following steps that: obtaining an original clock correction sequence, and carrying out differential processing; according to the original clock correction sequence, calculating a clock correction data quality factor, and determining the forecasting duration; adopting at least two types of clock correction forecasting methods to carry out forecasting learning; calculating the weight value of each clock correction forecasting method; according to the forecasting learning results of various clock correction forecasting methods and the corresponding weight value, calculating a combined clock correction forecasting value; judging whether time synchronization is established again or not at any time in a forecasting process; if the time synchronization is established, stopping forecasting immediately, and otherwise, continuously forecasting until the forecasting duration is achieved; if the time synchronization is still not established after the forecasting duration is achieved, prolonging the duration of the original clock correction, estimating the forecasting duration again, and repeating the above steps until the step of clock correction is established again; and after the clock correction forecasting is finished, carryingout differential inverse operation on the clock correction forecasting result, and obtaining a final clock correction forecasting sequence. The method aims at a situation that the forecasting duration is uncertain, and forecasting robustness is good.