几何代数GIS计算引擎的设计与实现  

Design and Realization of GA Based Multi-dimensional Integrated GIS Computing Engine

作　　者：胡勇[1,2] 孙惠[2] 罗文[2] 袁林旺[2] 

机构地区：[1]南京师范大学计算机科学与技术学院,江苏南京210023 [2]南京师范大学虚拟地理环境教育部重点实验室,江苏南京210023

出　　处：《地理与地理信息科学》2015年第1期27-31,53,共6页Geography and Geo-Information Science

基　　金：江苏省高校自然科学研究项目"多维统一的几何代数并行空间索引研究"(13KJB170006);江苏省自然科学基金青年基金项目"复杂场景中空间关系动态计算的几何代数方法"(BK2012454);国家科技支撑计划课题"视频GIS与突发公共事件的感知控制系统"(2012BAH35B02)

摘　　要：分析型GIS的发展对GIS开发模式的统一性和算法的通用性提出了新的要求。基于几何代数(GA)的GIS多维统一计算模型(GA-MUC)为进行复杂GIS空间分析提供了解决思路。该文提出了基于GA的多维统一GIS计算引擎(GA-MUCE),探讨了基于GA的属性空间、网络空间与场空间中基本对象与算子的表达,并将其用于GIS算法的构建。该引擎具有自适应性特征,可根据具体的应用需求定义计算空间,进而设计相应的对象表达与算子、算法库,最终构建插件形式的GIS分析求解模板。该研究是对复杂GIS空间分析问题求解模式的探索,有利于促进新一代分析型GIS的发展。The development of analysis-oriented GIS requires GIS systems make much more progress to follow certain templates and GIS algorithms to deal with different types of geographic data and data in different dimensions. GA based multi-dimensional unified computation model （GA-MUC） provides a solution for complicated GIS spatial analysis. In this paper, the GA based multi-dimensional unified computing engine （GA-MUCE） is designed, and the expressions of basic objects and operators in GA- based attribute space, network space and field space are discussed respectively. Then these methods are applied to the construc- tion of GIS algorithms. The engine is able to meet different application meets. It can be used to define the computing space, de- sign operator and algorithm libraries, express specific GIS objects, and finally construct the GIS analyzing templates in the form of plugin Researches have been done to explore solutions for complex GIS spatial analysis in the paper,which will help to pro- mote the development of new generation of analysis-oriented GIS.

关 键 词：几何代数(GA) GA-MUC 计算引擎 计算插件 

分 类 号：P208[天文地球—地图制图学与地理信息工程] TP301.6[天文地球—测绘科学与技术]