| 基于元数据的地理空间信息Web服务及其开发研究 |
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| 引用本文： | 王卷乐,游松财,诸云强. 基于元数据的地理空间信息Web服务及其开发研究[J]. 地理信息世界, 2005, 3(1): 23-27 |
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| 作者姓名： | 王卷乐 游松财 诸云强 |
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| 作者单位： | 中国科学院地理科学与资源研究所,北京,100101;中国科学院地理科学与资源研究所,北京,100101;中国科学院地理科学与资源研究所,北京,100101 |
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| 基金项目： | 科技部“国家科学数据共享工程”试点项目资助(编号: 2003DEA2C010) |
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| 摘 要： | 地理空间信息Web服务的基础是元数据，通过元数据接口可以有效地发现和提供地理空间信息服务。基于CSDGM标准，分析和扩展地理空间信息服务模块，包括1个复合元素和11个数据元素。提出2种基于元数据的地理空间信息Web发布模式，并从服务角度对二者进行了比较。结合第2种模式分析了地理空间信息服务的关键技术，并进行了应用实例验证。
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| 关 键 词： | 地理空间信息 元数据扩展 网络共享 GIS |
| 文章编号： | 1672-1586(2005)01-0023-05 |
| 修稿时间： | 2004-09-06 |
Study on Web-Oriented Geospatial Information Service and Its R&D Based on Metadata |
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| WANG Juan-le,YOU Song-cai,ZHU Yun-qiang. Study on Web-Oriented Geospatial Information Service and Its R&D Based on Metadata[J]. Geomatics World, 2005, 3(1): 23-27 |
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| Authors: | WANG Juan-le YOU Song-cai ZHU Yun-qiang |
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| Abstract: | Geospatial metadata is competent for web-oriented geospatial data sharing but has no ability to provide geospatial information service. Based on the analysis of CSDGM structure, this paper expands an extra section of geospatial information metadata profile, which includes one compound element and 11 data elements. These metadata interfaces insure distributed geospatial information services to be found and visited. Two kinds of geospatial information publication schemes are studied and compared. The two schemes are distinguished by their data storage and visiting strategy. The geospatial information services' prototype is designed and developed according to the second scheme. Its tech-flow includes 10 key information processing and 6kinds of necessary technology steps. The development experience has shown that the metadata application profile and related key technologies are suitable for web-oriented geospatial information services. |
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| Keywords: | geospatial information metadata profile web sharing GIS |
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