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《Acta Geodaetica Et Cartographic Sinica》 2003-02
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Determination of Shenzhen Geoid with 1 km Resolution and Centimeter Accuracy

NING Jinsheng1,LUO Zhicai1,3,YANG Zhanji2,CHEN Yongqi3,ZHANG Tianji2n, Wuhan University, Wuhan 430079, China; 2. Land Planning Department of Shenzhen, Shenzhen 518028, China; 3. Department of Land Surveying and GeoInformatics, The Hong Kong Polytechnic University, Hong Kong, China)  
The geoid of Shenzhen with onekilometer resolution, has been constructed with removerestore technique, using 65 GPS/leveling data with accuracy better than 2 cm, 5 213 discrete gravity data, digital terrain model with 100 m resolutions and global earth's gravity field model WDM94. The modeled geoid heights were compared with the observed ones derived from 29 GPS/leveling data that not applied to the construction of Shenzhen geoid. The test results show that the standard deviation of the differences is ±1.4 cm.
【Fund】: 深圳市规划与国土资源局资助项目;; 香港研究资助局(RGC)资助项目(B.34.37.Q328)
【CateGory Index】: P223
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