基于地图代数的地球椭球面空间分析系统的研究与设计

The Research and Design of Spatial Analysis System on the Earth Ellipsoidal Surface Based on Map Algebra

基于地图代数方法和组件式GIS开发技术研究了地球椭球面空间分析系统的设计和原型开发。系统实现了地球椭球面上的长度和面积度量、航迹线可视化、缓冲区生成、Voronoi图构造等特色功能,对于传统的以投影平面为基础的空间分析方法进行了改进,特别适用于地球椭球面上的空间分析和全球范围内复杂地理数据的快速高精度计算,在数字地球的建设以及其他全球性问题的研究当中可以发挥重要作用。

This paper studied the design of spatial analysis system on the Earth ellipsoidal surface and its prototype development based on the map algebra and component-based GIS technology. This system implemented many distinguishing functions, e.g., measurement of length and area, visualization of different track lines, creation of buffer and construction of Voronoi diagram on the earth ellipsoidal surface. This system improved the traditional method of spatial analysis on the projection plane, and it is particularly applicable to the spatial analysis system on the earth ellipsoidal surface as well as the rapid and highly accurate computation for geospatial data globally. This system can also play an important role in the construction of digital earth and other research of global issues.