Determination of Region Quasi-geoid Using GPS/Levelling Data

Geoscience ›› 2007, Vol. 21 ›› Issue (Suppl): 148-151.

• Engineering Geology and Environmental Geology • Previous Articles Next Articles

Determination of Region Quasi-geoid Using GPS/Levelling Data

SONG Lei^1,2 , HUANG Teng¹, FANG Jian²

1College of Civil Engineering, Hohai University,Nanjing,Jiangsu210098, China;
2Key Laboratory of Dynamical Geodesy, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan, Hubei430077, China

Received:2006-08-19 Revised:2006-11-29 Online:2007-08-20 Published:2007-08-20

Abstract

Abstract:

In order to use the height information of GPS observation and to translate ellipsoid height into normal height of observation point, the 1.5′×1.5′ distinguish rate region quasi-geoid has been constructed with geometry method,using C grade GPS control-web and Levelling data. The modeled quasi-geoid height anomaly was compared with C grade GPS/Levelling and D grade GPS/Level in height anomaly. The accuracy of inner and outer were all excelled than 30 cm. This shows that the accuracy of region quasi-geoid is centimeter grade.

Key words: GPS/Levelling, height anomaly, Quasi-geoid

CLC Number:

P228.4

SONG Lei , HUANG Teng , FANG Jian. Determination of Region Quasi-geoid Using GPS/Levelling Data[J]. Geoscience, 2007, 21(Suppl): 148-151.

Determination of Region Quasi-geoid Using GPS/Levelling Data

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