对分量进行联合解算的极移预报方法研究

Study on polar motion prediction by combining components

为了提高极移预报的精度,该文提出结合极移的两个分量进行统一求解的极移联合预报方法:将极移的两个分量组成一个观测方程,并采用LS+AR模型对联合分量的确定项与随机项进行拟合。实验结果表明,文中采用的联合预报方法可以提高极移的预报精度。

In order to improve the accuracy of the polar motion prediction,the paper proposed a combined prediction method of polar motion that uniformly solves the X,Y components：the both components of polar motion were used to form one observation equation,and LS＋AR model was chosen to fit the fixed part and stochastic part of the combined components.Experimental result showed that the method could help improve the prediction accuracy of polar motion.