Chinese Geodetic Coordinate System 2000 and its Comparison with WGS84
2014; Trans Tech Publications; Volume: 580-583; Linguagem: Inglês
10.4028/www.scientific.net/amm.580-583.2793
ISSN2297-8941
AutoresHou Pu Li, Shao Feng Bian, Zhong Mei Li,
Tópico(s)Advanced Computational Techniques and Applications
ResumoIt is a general trend to adopt the geocentric coordinate system as a geodetic datum for the international measurement community. The definition and realization of Chinese geocentric three-dimensional coordinate system (CGCS2000) which has been employed since July 1st, 2008 were introduced in detail. The defining parameters and derived constants of the reference ellipsoid used were given. The comparison between CGCS2000 and WGS84 was carried out. The differences of geodetic coordinates of a point between the two coordinate systems, normal gravity and vertical gradient of normal gravity on the two ellipsoids caused by the change of the flattening of the ellipsoid were analyzed. The results show that these differences could be neglected in view of present measurement accuracies.
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