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FY-2C is geostationary satellite which is researched and developed by China. The primary advantage of geostationary satellite is the ability to characterize the radiance by obtaining numerous views of a specific earth location at any time of a day. This allows the production of a composite image to monitor short-term weather better. In this paper, data compression from the composite multi-spectral...
In this paper, the semantic information of geographic features is researched. And, the semantic information of geographic features is used to help the search of geographic features. Semantic information of geographic features includes: spatial semantic information, geographic features category semantic information and the semantic information the users add. Chinese administrative ontology and the...
As the non-functional semantics of Web service, Quality of Service (QoS) takes an essential role in actual use of Web services. It is necessary to take the QoS into account in the discovery and composition of Web services. This paper presents an automatic service composition algorithm to generate the composite services which are called service trees, and then addresses the issue of composite service...
As for organization and management of massive multi-resolution data, efficiency of spatial index, data compression technology, network technology, seamless integration of multi-source data, real-time roaming and interactive of ultra-large-scale scenes and other related technologies of grid data, although the theory of technology and research on them have made some progress on Internet-based PC, it...
Embedded GPS navigation, based on embedded platform technology, through GPS and GIS and combined with handheld devices, achieves target location, path calculation, route guidance and surrounding search functions of mobile users. This paper, Symbian OS mobile phones as the terminal, background Linux servers providing the mapping service, path calculation, route guidance, networking search, location...
The model of Web Service and Geographic Information Services Specification of the OGC is introduced in this paper firstly; then the difference of the RPC and ROA is analyzed, the properties of the REST and the detail of the Restlet architecture are expounded. The detail of the advantages of GIS information sharing which used the REST design principles is indicated. Finally, the design process which...
This paper integrates grid technology and OGC compliant services to design and implemented a geospatial Web service platform for the western region's surveying and mapping project. It can make use of OGC common services and interoperability interfaces to supply efficient and secure data management, publishing and inquiries in the heterogeneous computer environment and as well as multi-scale seamless...
The ontology has an important role in the sharing and interoperability of geographic information and services. At present, the ontology merging usually needs people to participate in. To avoid this insufficient, this paper studies the model of ontology merging at first, and then gives an approach to merge ontology automatically. The core idea of the approach is, firstly, use the ontology similarity...
This paper designed and implemented a web-based interoperation architecture for integrating diverse sensor data source for weather application using a service-oriented architecture (SOA). In this architecture, the OGC Data Interoperability Technology and Protocols are applied to provide uniform standard access interfaces. Sensor data will be served through standard OGC WCS (Web Coverage Services),...
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