Volume 33 Issue 1
Jan.  2008
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SUN Min, ZHAO Xuesheng, ZHAO Renliang. Global GIS and It's Key Technologies[J]. Geomatics and Information Science of Wuhan University, 2008, 33(1): 41-45.
Citation: SUN Min, ZHAO Xuesheng, ZHAO Renliang. Global GIS and It's Key Technologies[J]. Geomatics and Information Science of Wuhan University, 2008, 33(1): 41-45.
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Global GIS and It's Key Technologies

  • 1Institute of RS&GIS,Peking University,5 Yiheyuan Road,Haidian District,Beijing 100871,China;2Department of Survey and Land Science,China University of Mining and Technology(Beijing;D11 Xueyuan Road,Beijing 100083,China;3National Geomatics Center of China,1 Baishengcun,Haidian District,Zizhuyuan,Beijing 100044,China

Funds: 国家自然科学基金资助项目(40471104,40471108)
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  • Received Date: October 11, 2007
  • Revised Date: October 11, 2007
  • Published Date: January 04, 2008
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    • Abstract
  • The research works on Global GIS(GGIS) becomes prominent in recent years.The current research works are discussed,and constructing a multi-level grid framework is the basis of GGIS is put forward.This multi-level grid framework is based on a uniform 3D Earth reference system and rely on Earth ellipsoid model.A lot of academic and technical problems exist and need to be resolved in sides such as multi-resources and multi-levels global spatial data integration,data expression on 3D ellipsoid surface,multi-levels grid coding and index technologies.Further analysis on the difficulties of these problems,and some reference solutions are also given.
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