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Geospatial data is the core of spatial information system. It is always a research hotspot of how to realize the sharing and integration applications of distributed geospatial data. OGC has developed a number of web services specifications that enable the interoperation of heterogeneous geospatial data sources. Grid is the technology enabling resource sharing and coordinated problem solving in dynamic,...
Spatial Data Grid allows for solving larger problems and executing applications that traditional Web GIS (Geographic Information System) can not handle efficiently. The purpose of this paper is to design and implement a new mechanism to organize miscellaneous Vector Map Services, built on GT 4 (Globus Toolkit 4), and based on WSRF (Web Services Resource Framework). In this paper, we illustrate the...
Recently, there has been a fast proliferation of applications creating geospatial data distributed somewhere that has to be processed, queried and analyzed efficiently. Consequently, there is a need for effective data processing technologies that are able to support such distributed query and analysis operations. The emergence of grid computing offers a well solution to accomplish this goal. Development...
It is currently one of the hottest research areas of geospatial informatics to integrate OGC specifications with Globus-based Grid technology to develop geospatial Grid. In Grid systems, the security of resources outsourced from multiple organizations is very critical. However, the authorization mechanisms provided in the Globus Toolkit cannot realize the fine-grained and geospatial access control...
The research on the sharing and interoperation of geospatial information is always a hotspot in GIS field. Many methods have been proposed such as data format transform, data direct access, Web GIS and data interoperation. These technologies have made great progresses in the sharing and interoperability of geospatial information. But there are many unconquerable problems such as the process of the...
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