GeoSOT-3D橢球體剖分真三維數(shù)據(jù)表達
發(fā)布時間：2018-11-05 12:42
【摘要】：隨著地球觀測技術(shù)和信息技術(shù)的進步,以全球為背景的科學(xué)探索不斷增多,不僅是地球表面信息,地下、水下、空中等地球上各個層次的空間信息都受到極大的關(guān)注。地球球體剖分網(wǎng)格可以構(gòu)建真三維的數(shù)據(jù)模型,進而實現(xiàn)空天地、地下水下一體化的空間數(shù)據(jù)組織、管理、表達與應(yīng)用。本文詳細論述了GeoSOT-3D橢球體剖分網(wǎng)格的剖分空間框架、剖分編碼與剖分尺度特性等理論體系。建立基于GeoSOT-3D的空間對象的真三維表達模型。利用該真三維模型實現(xiàn)了地球橢球體的地上地下可視化,點線面體等空間實體的可視化。研究表明,GeoSOT-3D橢球體剖分具有橢球剖分框架簡單、體系完整、二三維一致等特點,因而在該框架下的真三維數(shù)據(jù)模型可用于下一代地理信息系統(tǒng)中的空間大數(shù)據(jù)的組織管理與表達。
[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.
【作者單位】： 北京大學(xué)遙感與地理信息系統(tǒng)研究所;北京大學(xué)工學(xué)院航空航天工程系;
【基金】：高分辨率對地觀測系統(tǒng)國家重大專項(03-Y30B06-9001-13/15、30-Y30B13-9003-14/16)資助
【分類號】：P208
本文編號：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.
【作者單位】： 北京大學(xué)遙感與地理信息系統(tǒng)研究所;北京大學(xué)工學(xué)院航空航天工程系;
【基金】：高分辨率對地觀測系統(tǒng)國家重大專項(03-Y30B06-9001-13/15、30-Y30B13-9003-14/16)資助
【分類號】：P208
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