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1、沈陽(yáng)理工大學(xué)碩士學(xué)位論文基于空間信息柵格的信息交換技術(shù)研究姓名:范曉靜申請(qǐng)學(xué)位級(jí)別:碩士專業(yè):信號(hào)與信息處理指導(dǎo)教師:姜月秋20100301沈陽(yáng)理工大學(xué)碩士學(xué)位論文 Abstract Satellite network as a means of information access with the coverage of worldwide capacity provides a wealth of spatial informat
2、ion resources. Although the satellite network has been established for information acquisition, processing, transmission system and etc, within a certain degree has played an important role, there are some problems such
3、as the technical system unstandardized, non-uniform, and data access untransparent and so on, which makes the information not to be exchanged and shared. Applying Grid technology in the satellite network, then constructi
4、ng Spatial Information Grid can solve the current problems. Information exchange is an important way to access information, which is the basis for SIG information sharing, for the reason it is necessary to study the spat
5、ial information grid information exchange technology, which provides a unified information interchange way and norms, led to spatial information resources are effectively shared and applied. We through analysis five floo
6、rs architecture and OGSA bring forward a layered, service-oriented and open Spatial Information Grid architecture. On the framework we analyze the wide-area network information interchange model and establish a unified i
7、nformation exchange model considering SIG information node interaction, which fixes on the relationship between the information providers, information storage centers and users. In order to eliminate the information isom
8、erous character we use XML describe spatial information resources, make XML documents store in the relational databases, which carries on the fine grain relations the memory, provides information exchange flexibility and
9、 simplicity. We design the information exchange protocol including the exchange message format, the command operations, which banishes the information ambiguity in the transmission, reading, analysis, to achieve informat
10、ion exchange between information producers and consumers. Finally we construct the spatial information exchange simulation system, which simulates an example of the information exchange process, validates the protocol.
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