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Determination of Geoid by GPS and Gravity Data

YU Xiao-ping1, ZHANG Ting-yu2, LIU Cai1, CHEN Zeng-bao3, XU Hui-ping4,PANG He-min1   

  1. 1.College of GeoExploration Science and Technology,Jilin University, Changchun 130026, China;2.College of Investigation and Survey,Changchun Institute of Technology, Changchun 130012,China;3.Bureau of Surveying and Mapping of Jilin Province, Changchun 130000, China;4.School of Ocean and Earth Science, Tongji University, Shanghai 200092, China
  • Received:2007-09-26 Revised:1900-01-01 Online:2008-09-26 Published:2008-09-26
  • Contact: YU Xiao-ping

Abstract: As an application and test of GPS/gravity boundary value problem, a local geoid located in N area is determined by 600 GPS/gravity data and 48 GPS/leveling data. The accuracy analysis by GPS/leveling data matching and direct correction of system difference show that a centimeter accuracy of local geoid can be achieved by combining the method of GPS/gravity data and the method of GPS/gravity boundary value problem.

Key words: GPS/gravity border value problem, quasi-geoid, accuracy analyses, gravity surveying

CLC Number: 

  • P631.1
[1] YU Xiao-ping, YANG Guo-dong, XU Hui-ping，XIAO Feng, ZHAO Zhen-yu,LIU Cai, MENG Ling-shun. Research on Fitting and Transformating GPS Height into Normal Height in Band Region [J]. J4, 2007, 37(1): 185-0189.
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