关键词: 地理信息服务, 地理信息共享与互操作, OGC网络服务, 服务质量, 服务监测与评价

Abstract: Open geospatial consortium Web Services (OWS) are essential parts for the national and global geospatial data infrastructure construction and have been increasingly adopted to publish the geographic data through the Internet for sharing and interoperation. However, these services are widely dispersed and hard to be recovered once they are inaccessible or need long response time. Focusing on the availability and performance of the OWS, a dynamic task-planning model was generated for monitoring OWS. And, a model-based monitoring workflow and an evaluation model were proposed including evaluation factors and weights. Based on the above models, a special prototype was developed to monitor the services statuses dynamically and evaluate performance considering the history accessibility records. An experiment of Web Map Service (WMS) was done to demonstrate the abilities of the developed prototype system.

Key words: geographic information service, geospatial sharing and interoperability, Open Geospatial Consortium Web Service (OWS), Quality of Service (QoS), service monitoring and evaluation