分析了当前地理信息服务与其元数据不对称导致多源地理信息服务难于无缝集成的现状,提出根据OGC(Open Geospatial Consortium)网络地图服务(Web Map Service,WMS)动态生成自身元数据的方法,并基于OGCCSW(Catalogue Service for the Web)...分析了当前地理信息服务与其元数据不对称导致多源地理信息服务难于无缝集成的现状,提出根据OGC(Open Geospatial Consortium)网络地图服务(Web Map Service,WMS)动态生成自身元数据的方法,并基于OGCCSW(Catalogue Service for the Web)、WMS规范和ISO19139元数据标准开发了MS2 MD中间件。提出用于监测地理信息服务质量的方法,实现了对多源、分布式CSW与WMS的准实时动态监测;同时,设计了多源分布式CSW和WMS地理信息服务的集成体系结构,并将上述方法应用于全球综合地球观测系统(Global Earth Observation Systemof Systems,GEOSS)的空气质量与健康项目中,解决了WMS与其自身元数据信息不对称以及地理信息服务质量的准实时监测问题,实现了多源分布式CSW和WMS地理信息服务的无缝集成与互操作。展开更多
With the deepening application of geographic information web services, as a significant part, geographic information directory service sets up a service transaction platform between the service providers and the servi...With the deepening application of geographic information web services, as a significant part, geographic information directory service sets up a service transaction platform between the service providers and the service requestors, providing one-stop registration, access and management functions of geographic information web services, so it is very important to carry out the research on geographic information directory service. According to the domestic and overseas metadata standards, the service expression-oriented metadata information model for geographic information web service is established, and the discovery mechanism dominated by geographic information service registration and active discovery is realized accordingly. After that, overall design of directory service model is made, and finally the research results are integrated into the geographic information service software NewMapServer and deployment test is made under the Google Cloud Environment Google App Engine, providing a certain reference for sharing the Smart City construction achievements.展开更多
文摘分析了当前地理信息服务与其元数据不对称导致多源地理信息服务难于无缝集成的现状,提出根据OGC(Open Geospatial Consortium)网络地图服务(Web Map Service,WMS)动态生成自身元数据的方法,并基于OGCCSW(Catalogue Service for the Web)、WMS规范和ISO19139元数据标准开发了MS2 MD中间件。提出用于监测地理信息服务质量的方法,实现了对多源、分布式CSW与WMS的准实时动态监测;同时,设计了多源分布式CSW和WMS地理信息服务的集成体系结构,并将上述方法应用于全球综合地球观测系统(Global Earth Observation Systemof Systems,GEOSS)的空气质量与健康项目中,解决了WMS与其自身元数据信息不对称以及地理信息服务质量的准实时监测问题,实现了多源分布式CSW和WMS地理信息服务的无缝集成与互操作。
文摘With the deepening application of geographic information web services, as a significant part, geographic information directory service sets up a service transaction platform between the service providers and the service requestors, providing one-stop registration, access and management functions of geographic information web services, so it is very important to carry out the research on geographic information directory service. According to the domestic and overseas metadata standards, the service expression-oriented metadata information model for geographic information web service is established, and the discovery mechanism dominated by geographic information service registration and active discovery is realized accordingly. After that, overall design of directory service model is made, and finally the research results are integrated into the geographic information service software NewMapServer and deployment test is made under the Google Cloud Environment Google App Engine, providing a certain reference for sharing the Smart City construction achievements.
