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首页> 外文会议>ISPRS Technical Commission IV Symposium >A PRACTICE APPROACH OF MULTI-SOURCE GEOSPATIAL DATA INTEGRATION FOR WEB-BASED GEOINFORMATION SERVICES
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A PRACTICE APPROACH OF MULTI-SOURCE GEOSPATIAL DATA INTEGRATION FOR WEB-BASED GEOINFORMATION SERVICES

机译：基于Web的地理信息服务的多源地理空间数据集成的实践方法

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Geospatial data resources are the foundation of the construction of geo portal which is designed to provide online geoinformation services for the government, enterprise and public. It is vital to keep geospatial data fresh, accurate and comprehensive in order to satisfy the requirements of application and development of geographic location, route navigation, geo search and so on. One of the major problems we are facing is data acquisition. For us, integrating multi-sources geospatial data is the mainly means of data acquisition. This paper introduced a practice integration approach of multi-source geospatial data with different data model, structure and format, which provided the construction of National Geospatial Information Service Platform of China (NGISP) with effective technical supports. NGISP is the China's official geo portal which provides online geoinformation services based on internet, e-government network and classified network. Within the NGISP architecture, there are three kinds of nodes: national, provincial and municipal. Therefore, the geospatial data is from these nodes and the different datasets are heterogeneous. According to the results of analysis of the heterogeneous datasets, the first thing we do is to define the basic principles of data fusion, including following aspects: 1. location precision; 2.geometric representation; 3. up-to-date state; 4. attribute values; and 5. spatial relationship. Then the technical procedure is researched and the method that used to process different categories of features such as road, railway, boundary, river, settlement and building is proposed based on the principles. A case study in Jiangsu province demonstrated the applicability of the principle, procedure and method of multi-source geospatial data integration.
机译：地理空间数据资源是地理门户网站建设的基础，旨在为政府，企业和公众提供在线地理信息服务。保持地理空间数据新鲜，准确和全面，以满足地理位置，路由导航，地理搜索等的应用需求，准确和全面。我们面临的主要问题之一是数据采集。对我们来说，集成了多源地理空间数据是数据采集的主要原因。本文介绍了具有不同数据模型，结构和格式的多源地理空间数据的实践集成方法，提供了中国（NGISP）国家地理空间信息服务平台的建设，具有有效的技术支持。 NGISP是中国的官方地理门户网站，基于互联网，电子政务网络和分类网络提供在线地理信息服务。在NGISP架构中，有三种节点：国家，省级和市政府。因此，地理空间数据来自这些节点，并且不同的数据集是异构的。根据异构数据集的分析结果，我们所做的第一件事是定义数据融合的基本原理，包括以下方面：1。位置精度; 2.Geometric代表; 3.最新状态; 4.属性值;和5.空间关系。然后，基于原则，提出了研究技术程序和用于处理道路，铁路，边界，河流，结算和建筑等不同类别的方法。江苏省案例研究表明了多源地理空间数据集成原理，程序和方法的适用性。

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