ANALYSIS OF MODEL IN ULTRA SHORT TERM PREDICTING
SATELLITE CLOCK ERROR
1) College of Navigation and Aerospace Engineering, Information Engineering University, Zhengzhou 450052
Abstract In the widearea real time precise point positioning, the ultra short term prediction of satellite clock error is needed for real time solving. The effects of the different satellite type clock error prediction were analized, including linear model, quadratic polynomial model, grey model and quadratic polynomial model based on epoch difference. The results of analysis show that prediction accuracy by the four methods satisfy the needs of precise point positioning in the ultra short term prediction of satellite clock error. In ultra short term prediction with small specimen, prediction accuracy of clock error is irrelevant to satellite. It mainly depends on the small scale change of clock error in different period and the length of prediction time.
Key words ：
Precise Point Positioning(PPP)
quadratic polynomial
grey model
epoch difference
ultra short term prediction
Received: 10 September 2013
Published: 23 January 2014
Cite this article:
Yu Heli,Hao Jinming,Liu Weiping et al. ANALYSIS OF MODEL IN ULTRA SHORT TERM PREDICTING
SATELLITE CLOCK ERROR[J]. jgg, 2014, 34(1): 161-164.
Yu Heli,Hao Jinming,Liu Weiping et al. ANALYSIS OF MODEL IN ULTRA SHORT TERM PREDICTING
SATELLITE CLOCK ERROR[J]. jgg, 2014, 34(1): 161-164.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2014/V34/I1/161
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