Table 4 Improvement rate of various models in the X- and Y-directions of PM
From: Analysis and prediction of polar motion using MSSA method
Method | X-direction of PM | Y-direction of PM | ||||||
|---|---|---|---|---|---|---|---|---|
2016 (%) | 2017 (%) | 2018 (%) | Total (%) | 2016 (%) | 2017 (%) | 2018 (%) | Total (%) | |
LM + MSSA(6) + ARMA | 36.94 | 60.97 | 53.61 | 50.51 | 35.93 | 68.37 | 48.60 | 50.97 |
LM + MSSA(7) + ARMA | 38.59 | 58.02 | 53.11 | 49.91 | 36.67 | 67.31 | 48.64 | 50.87 |