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Earth Orientation Parameter and the Geocentric Variance During 1993-2002 Solved with Lageos SLR Data
ZHU Yuan-lan1, FENG Chu-gang2
(1.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030,China; 2. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China)
Abstract£ºWe solve the Earth Orientation Parameter (EOP) and the geocentric variation using the Lageos Satellite Laser Range (SLR) data from 1993 to 2002. The results are compared with EOP(IERS)C04 and (IERS)geocentric variation during the same period. The EOP(SHAO) shows the consistency of Xp-0.39mas, Yp-0.41mas for the polar motion and Dr-0.03ms for the length-of-day (LOD) variation. The geocentric variation shows the accuracy of X£¬Y-1.0cm and Z-3¡«4cm.
Key words£º
SLR (satellite laser range)£»EOP (earth orientation parameter) £»IERS(International Earth Rotation Service)