GeoSOT-3D椭球体剖分真三维数据表达
发布时间：2018-11-05 12:42
【摘要】：随着地球观测技术和信息技术的进步,以全球为背景的科学探索不断增多,不仅是地球表面信息,地下、水下、空中等地球上各个层次的空间信息都受到极大的关注。地球球体剖分网格可以构建真三维的数据模型,进而实现空天地、地下水下一体化的空间数据组织、管理、表达与应用。本文详细论述了GeoSOT-3D椭球体剖分网格的剖分空间框架、剖分编码与剖分尺度特性等理论体系。建立基于GeoSOT-3D的空间对象的真三维表达模型。利用该真三维模型实现了地球椭球体的地上地下可视化,点线面体等空间实体的可视化。研究表明,GeoSOT-3D椭球体剖分具有椭球剖分框架简单、体系完整、二三维一致等特点,因而在该框架下的真三维数据模型可用于下一代地理信息系统中的空间大数据的组织管理与表达。
[Abstract]:With the progress of Earth observation technology and information technology, the scientific exploration in the background of the whole world is increasing, not only the earth surface information, underground, underwater, air and other levels of space information on the earth are paid great attention to. The real 3D data model can be constructed by the meshing of the earth sphere, and the spatial data organization, management, expression and application of the space data under the empty world and underground water can be realized. In this paper, the GeoSOT-3D ellipsoidal meshes are discussed in detail, such as the space frame, the partition coding and the characteristics of the meshes. A true 3D representation model of spatial objects based on GeoSOT-3D is established. Using the true 3D model, the above ground and underground visualization of the earth ellipsoid and the visualization of the point line surface and other spatial entities are realized. The results show that GeoSOT-3D ellipsoid subdivision has the characteristics of simple ellipsoid partition frame, complete system and uniform two and three dimensions. Therefore, the true 3D data model under this framework can be applied to the organization and expression of spatial big data in the next generation GIS.
【作者单位】： 北京大学遥感与地理信息系统研究所;北京大学工学院航空航天工程系;
【基金】：高分辨率对地观测系统国家重大专项(03-Y30B06-9001-13/15、30-Y30B13-9003-14/16)资助
【分类号】：P208
本文编号：2312119
[Abstract]:With the progress of Earth observation technology and information technology, the scientific exploration in the background of the whole world is increasing, not only the earth surface information, underground, underwater, air and other levels of space information on the earth are paid great attention to. The real 3D data model can be constructed by the meshing of the earth sphere, and the spatial data organization, management, expression and application of the space data under the empty world and underground water can be realized. In this paper, the GeoSOT-3D ellipsoidal meshes are discussed in detail, such as the space frame, the partition coding and the characteristics of the meshes. A true 3D representation model of spatial objects based on GeoSOT-3D is established. Using the true 3D model, the above ground and underground visualization of the earth ellipsoid and the visualization of the point line surface and other spatial entities are realized. The results show that GeoSOT-3D ellipsoid subdivision has the characteristics of simple ellipsoid partition frame, complete system and uniform two and three dimensions. Therefore, the true 3D data model under this framework can be applied to the organization and expression of spatial big data in the next generation GIS.
【作者单位】： 北京大学遥感与地理信息系统研究所;北京大学工学院航空航天工程系;
【基金】：高分辨率对地观测系统国家重大专项(03-Y30B06-9001-13/15、30-Y30B13-9003-14/16)资助
【分类号】：P208
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