Geospatial Information Processing Method Based on Spherical Hexagon Grid System

摘要：

In recent years, the way to manage massive geospatial information of a global scale by Discrete Global Grid Systems (DGGSs) has attracted great attention. In this paper, a new data processing method is proposed. Firstly, planar multi-resolution hexagon grids are projected to spheres by Snyder Equal-area Polyhedral Projection to construct grid systems. Then, the spatial relationships between spherical hexagon grids are converted into spherical triangle quad-tree by Quaternary Groups of Boundary Vertexes. Additionally, extended Quartemary Triangular Mesh (QTM)encoding scheme is utilized in three-axis discrete grid coordinate systems to facilitate the transformation between geographic coordinates and cell address codes. Finally, cell analyzing and searching algorithm are proposed. Experimental results show that the data processing method proposed in this paper can operate cell address codes directly and efficiently.

关键词： Geospatial information hexagon grid system encoding searching

作者: Jin Ben Xiaochong Tong Song Ji

作者单位: Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450052, P.R.China; Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450052, P.R.China

会议类型: 国际会议

会议名称: 北京国际地理信息系统学术讨论会第七届会议（7th International Workshop Geographical Information System

会议地点: 北京

会议语种:英文

页码: 201-209

在线出版日期: 2007-09-14（万方平台首次上网日期，不代表论文的发表时间）