Dissertation > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications

Research on the Technology and Application of Mobile GIS Based on Distributed Storage

Author ZhangWei
Tutor WanGang
School PLA Information Engineering University
Course Cartography and Geographic Information Engineering
Keywords Distributed Storage Mobile GIS Location-based services Network transport strategy Software migration
CLC TN929.5
Type Master's thesis
Year 2010
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With the rapid development of embedded technology , network technology and wireless communication technology , mobile GIS has become a current research focus of geographic information systems . Mobile GIS is an embedded technology based on the integration of mobile communication technology , navigation and positioning technology , the Internet and other technologies for the integrated GIS, the advantage anywhere to provide users with a quick , convenient geospatial information services . In the era of information explosion , massive geospatial data storage and scheduling is the mobile GIS facing difficult problem , and the development of network storage technology to provide a feasibility solutions . On this basis , the mobile GIS based distributed storage system and its key technologies involved in the development of mobile terminals , network storage , software portability , GPS positioning technology . The main work of this thesis, including : 1. Distributed environment , the organization and management of geospatial data . Geospatial data pre-processing, to achieve the unity of the mathematical foundations of geospatial data through coordinate transformation , using data compression technology to reduce data redundancy ; introduce indexing techniques for data sub- block , the effective mass data organization ; using the network massive geospatial data storage technology distributed storage to achieve massive network storage and data management ; 2 key technologies of network transmission . Mobile GIS based distributed storage network transmission mode ; client and server-side dual caching strategy to reduce the frequency of data read , the use of multi-threading technology index HTTP chunked data for mobile GIS adaptive strategy for the exploration and analysis . The mobile GIS logic structure design and development . Planning, logical structure , functional modules for mobile GIS explicitly study the contents and objectives ; mobile the GIS terminals developed under the guidance of the principles , to achieve the rapid development of the smart phone terminal based on Windows CE and Android mobile platform and software portability , and UMPC devices on the wired network testing and realization of some functions .

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