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《Geography and Geo-Information Science》 2009-01
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A Topological-Triangular-Sets-Based Aground-Underground Spatial Data Integration Method

ZHANG Yuan-sheng1,WU Li-xin2(1.Institute for Geo-informatics & Digital Mine Research,Northeastern University,Shenyang 110004;2.Academy of Disaster Reduction and Emergency Management,Beijing Normal University,Beijing 100875,China)  
Aground-underground spatial data integration is the key of seamless integrated spatial modeling of aground-underground objects in the construction of digital city,digital mine and digital civil engineering.Based on analyzing to the connotation of spatial data integration,the mechanism and the principle of spatial data integration of aground and underground objects were discussed,and a preliminary solution for the spatial data integration of aground-underground objects was proposed in this paper.By introducing body-primitive,the Open GIS Simple Features Specification was extended,which is meaningful for 3D spatial data integration.For the integrated spatial modeling of surface buildings,terrain and strata respectively with CSG,CD-TIN and GTP model,a specified data organization structure for CSG+CD-TIN+GTP integrated model data was given.Meantime,based on topological triangular sets(TTS) a technology framework for aground-underground spatial data integration was designed,and the corresponding method to describe the integrated model data was proposed.With the aground-underground integrated spatial modeling of a city college being a case,the effect of aground-underground spatial data integration and 3D modeling based on TTS was shown.
【Fund】: 国家杰出青年基金项目(50525414);; 国家自然科学基金项目(40571137);; 国家863计划项目(2006AA12Z216)
【CateGory Index】: P208
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