COMPUTATION OF VERTICAL DEVIATION OF CHINESE HEIGHT DATUM FROM GEOID BY USING EGM2008 MODEL
Zhai Zhenhe 1,2) ; Wei Ziqing 2) ; Wu Fumei 2) ; and Ren Hongfei 2)
1)Institute of Surveying and Mapping of Information Engineering University,Zhengzhou 450052; 2)Xi’an Institute of Surveying and Mapping, Xi’an 710054
Abstract The vertical deviation of a local height datum from the geoid is essential and fundamental for the transformation of regional datums and the unification of the global height datum. The value of the gravity potential of Qingdao Dagang tidal station is acquired by using 936 GPS leveling point data and EGM2008 geopotential model, which is 62 636 852.85±0.07 m 2/s 2 , in turn ,a vertical deviation of 0.32 m of Chinese height datum from the geoid is obtained.
Key words :
EGM2008 model
geoid
height datum
gravity potential
vertical deviation
Received: 01 January 1900
Corresponding Authors:
Zhai Zhenhe
Cite this article:
Zhai Zhenhe,Wei Ziqing ,Wu Fumei et al. COMPUTATION OF VERTICAL DEVIATION OF CHINESE HEIGHT DATUM FROM GEOID BY USING EGM2008 MODEL[J]. , 2011, 31(4): 116-118.
Zhai Zhenhe,Wei Ziqing ,Wu Fumei et al. COMPUTATION OF VERTICAL DEVIATION OF CHINESE HEIGHT DATUM FROM GEOID BY USING EGM2008 MODEL[J]. jgg, 2011, 31(4): 116-118.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2011/V31/I4/116
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