摘要:
通过分析比较地学各学科的空间概念,深入地论述了地球信息系统的空间概念这一基本理论问题,指出了地球信息系统的空间数学基础是GIS空间概念的数学定义,揭示并论证了地理信息系统的空间数学基础,并相应讨论了"无缝空间数据库"技术的若干基本问题,认为"无缝"不仅是形式上的"无缝可视",更重要在于"无缝量度"、"无缝空间分析"、"规范地无缝集成"的实质性能力上。最后通过对"无缝空间数据库"下的空间分析理论和技术、空间(数据)的表达、国家地球空间数据框架和技术路线的论述,表明使GIS与各地球科学学科的地球空间完全一致,将全面有益于地球信息科学的新发展。
Abstract:
By analyzing and comparing the space conception of geography subjects,this paper discusses the space conception of the geographic information system,and points out that the space mathematics basis of the geographic information system has been the mathematics definition of the space conception of GIS.This paper has opened out and demonstrated the space mathematics basis of GIS.Hereby,it discusses a current hot topic-"the seamless space database" technology,and points out that what is called"seamless" is not only formal"the seamless visualization",but"the seamless measurement","the seamless space analysis" and"the seamless standardization integration".Finally,it disserts some of topics about space analysis theory and technology of"the seamless space database",space data expression,NGDF and technology route,movement geometry on Earth,environment and other problems.
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