摘要
元数据是信息共享的重要技术之一,地表覆盖信息具有类型多样、处理复杂、变化较快等特点,目前还没有相应的元数据标准规范对其进行描述。本文分析了地表覆盖信息的特征,以此为基础,扩展现有的地理信息元数据标准,构建了全球地表覆盖信息元数据模型;并结合OGC的CSW规范提出了全球地表覆盖元数据目录服务共享方案;最后实现了全球地表覆盖信息元数据目录原型系统,提供了用户发现、发布和管理元数据的功能,促进了全球地表覆盖信息的共享。
Metadata is one of the important technologies of information sharing. The information of land cover has the characteristics of diverse types,complex processing and fast change. There is no corresponding metadata standard specification until now. The characteristics of land cover information are analyzed in this paper. The existing GIS metadata standard is extended,and the global land cover information metadata model is constructed based on above. Combined with CSG specification of OGC,the global land cover metadata directory service sharing program is presented. At last,the prototype system of global land cover information metadata catalog is implemented,which provides users with the ability to discover,publish and manage metadata,and promotes the sharing of global land cover information.
出处
《测绘通报》
CSCD
北大核心
2017年第1期74-78,共5页
Bulletin of Surveying and Mapping
基金
国家自然科学基金青年科学基金(41301433)
国家自然科学基金重点基金(41231172)
