GM（1，1）MODEL BASED ON INTERCEPT CORRECTION AND
APPLICATION TO POLAR MOTION PREDICTION
Xu Junyi 1,2)
1）Institute of Surveying and Mapping，Information Engineering University，PLA，Zhengzhou 450052 2）Xi’an Information Division of Surveying and Mapping，Xi’an 710054
Abstract The GM（1，1）model was used for the dynamic prediction of polar motion parameters.To further improve the forecasting accuracy the intercept correction theory is introduced，and a new intercept correction method is proposed to adjust the forecasting results.The results show that GM（1，1）model can well be used for polar motion prediction，and the forecasting accuracy is effectually inproved with the new intercept correction method.
Key words ：
polar motion
intercept correction
grey model
time series
real time forecasting
Received: 01 January 1900
Corresponding Authors:
Xu Junyi
Cite this article:
Xu Junyi. GM（1，1）MODEL BASED ON INTERCEPT CORRECTION AND
APPLICATION TO POLAR MOTION PREDICTION[J]. , 2010, 30(1): 88-91.
Xu Junyi. GM（1，1）MODEL BASED ON INTERCEPT CORRECTION AND
APPLICATION TO POLAR MOTION PREDICTION[J]. jgg, 2010, 30(1): 88-91.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2010/V30/I1/88
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