WEI Erhu, TIAN Xiaojing, LIU Jingnan, ZHANG Rui. Analysis of Length of Day with 2008-2009 VLBI Observations[J]. Geomatics and Information Science of Wuhan University, 2010, 35(9): 1009-1012.
Citation: WEI Erhu, TIAN Xiaojing, LIU Jingnan, ZHANG Rui. Analysis of Length of Day with 2008-2009 VLBI Observations[J]. Geomatics and Information Science of Wuhan University, 2010, 35(9): 1009-1012.
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Analysis of Length of Day with 2008-2009 VLBI Observations

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  • We estimate the length of day(LOD) from VLBI observations during 2008-01-2009-03, and analyze its precision. And the estimated results are compared with the results from IVS. Then, the length of the month and half-month periods of the changes of LOD is computed. At the same time, the curve map is made with 2001-2009 VLBI observations to analyze the periods of Earth rotation, with which the seasonal changes is presented and analyzed. At last, the factors that possibly cause the changes of LOD are analyzed.
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