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《Journal of Geodesy and Geodynamics》 2009-01
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Li Chunhua1,3),Huang Dingfa1),Luo Zhicai2) and Deng Fang3)1)School of Civil Engineering,Southwest Jiaotong University,Chengdu6100312)School of Geodesy and Geomatics,Wuhan University,Wuhan4300793)Chengdu City Institute of Surveying and Investigation,Chengdu610081  
By use of 10 314 discrete gravity data,211 GPS/ leveling data,digital terrain model with 30″×30″ resolution and global earth's gravity field model WDM94,the quasi-geoid of Chengdu with 1′×1′ resolution,is constructed with remove-restore technique.The modeled geoid heights are tested with observed 20 GPS/ leveling data that were not applied to the construction of Chengdu quasi-geoid.The test results show that the standard deviation of the differences is ±0.009 m.The systematic bias of the two traditional vertical network was detected and analyzed by use of Chengdu quasi-geoid.
【Fund】: 成都市似大地水准面精化项目(200703066)
【CateGory Index】: P223
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