作　　者： ; ; ;

机构地区： 武汉大学测绘遥感信息工程国家重点实验室

出　　处： 《遥感技术与应用》 2003年第3期180-184,共5页

摘　　要： Internet与GIS结合成互联网地理信息系统(InternetGIS)是GIS软件发展的必然趋势,InternetGIS用于分布式地理信息的在线发布,并为分布式地理信息提供在线实时处理与分析的工具。对GML3.0(GeographyMarkupLanguage3.0,地理标记语言)的发展和核心技术进行了深入的研究,其主要内容包含了GML3.0的数据类型、要素、要素集合、几何模型的类型及元素、时态、层等,给出了一些内容模型以及相关内容的UML表示,还给出了使用GML3.0进行数据共享和互操作的应用实例,并对未来的GML版本进行了预测。 It is the GIS developing direction to integrate GIS with Internet. Internet GIS is not only used to publish distributed geographic information on line, but also to provide on line tools for distributed geographic information real\|time analysis and processing. Internet GIS should make use of existing multi\|sources and functions for geographic information analysis and processing. In other words, it must solve the problem of interoperability. This paper deeply researched the development and core technology of GML3.0(Geography Markup Language). The major contents included data type, feature, feature collection,types and elements of geometric model,temporal and coverage.Some content models and UML representation of correlative contents were presented. The paper also presented the application instance of data sharing and operatability by using GML3.0 and forecast the future version.

关 键 词： 数据类型 要素集合 层 几何模型

领　　域： [自动化与计算机技术]