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基于XML的地质数据集成及WebGIS发布研究

Study on XML-Based Geological Data Integration and WebGIS Publish

【作者】 连剑波

【导师】 王核; 张明华; 夏斌;

【作者基本信息】 中国科学院研究生院(广州地球化学研究所) , 构造地质学, 2006, 博士

【摘要】 本文研究重点是在地质信息化领域采用大型空间数据库、XML、网络服务(Web Services)和WebGIS技术,实现地质空间数据的集成、数据处理网络服务和信息发布。 随着多年来地质信息化的开展,形成了很多独立数据采集、综合处理、服务标准系列的数据库,各个数据库系统运行相对独立,具有典型的地理分布、海量、异构、多维时序特征,形成了各自独立的“信息孤岛”。给地质空间数据的共享、综合分析带来困难。 本文研究采用大型数据库系统Oracle9i Spatial构建地质空间数据库,通过基于XML标准的远程数据服务、数据转换工具,实现了基于大型空间数据库的地质空间数据的一体化组织和管理,实现数据的集成。在数据集成的基础上,研究地图网上发布技术,通过基于XML的地图发布技术,实现基于WebGIS的地质空间数据网上发布。 在地质数据中,地球物理数据是重要而用于地下空间探测应用的数据。但是地球物理原始数据需要经过专业的数据处理,才能进行较好的解释和应用。本文研究采用XML Web服务技术、SVG可视化技术,实现了基于XML的地球物理数据处理服务(包括离散数据网格化、等值线绘制、正则化滤波、位场延拓、一阶导数、重磁异常转换、分离场计算等)和初步的重力模型网上可视化反演服务。这些地质数据处理Web服务具有高度的可集成性和可共享性。

【Abstract】 This research focused on introducing idea of national data infrastructure in geological data and information management and discussed how to realize integration of geological data and processing method by SVG and Web services.Along with the development of geological information technology, many databases with independent data acquisition, processing and service standards have been developed. Obvious characters of these geological databases are complexity, multiple-scale, spatiality and huge in quantity. It is not only difficult to share data, but hard to carry out synthetic processing and integration in the status of today’s geological databases somehow like "information isolated island".Using method of building geological survey spatial database with Oracle9i Spatial and taking advantage of data service based on XML standard and data transform tools, The paper illustrates how to realized geological survey spatial data integration by practice. By means of Internet map distribution with XML, the paper has also realized geological survey spatial data distribution on the Web with WebGIS techniques.Because the geophysical data is an important part of geological survey spatial data and the geophysical data needs the specialized data processing method to be able to carry on further interpretation and application, the article has realized integration of geophysics data process methods service and gravity anomaly inversion on Internet based on XML Web Services and SVG. These services are griding, contour mapping, regularization filtering, potential field continuation, one-order derivatives, magnetism and gravity anomaly transformation and anomaly separation from the background. These geology data process web services have features of highly intergration and share.This thesis was supported by a sub-project "Grid Application Software development and Integration" of national 863 High-Tech project "ResourceEnvironment Application Grid Construction Development" and a 863 project" Spatial Data Management System for Geological Survey based on GIS ".

【关键词】 XMLSVG网络服务地质集成WebGIS
【Key words】 XMLSVGWeb ServicesGeologyIntegrationWebGIS
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