面向数字地质调查的移动GIS平台关键技术研究

发布时间：2019-02-11 12:02

【摘要】：移动GIS平台在数字地质调查中的应用极大地提高了地质调查的工作效率。本文以数字地质调查的实际需求为驱动,对移动GIS平台中空间数据管、变比例尺可视化、北斗定位通信等关键技术进行了重点研究。本文首先分析了移动设备上空间数据管理相关理论与技术,设计了一种面向数据编辑的内存管理策略,优化了移动设备上数据编辑的性能。然后,本文采用变比例尺可视化技术,利用四棱台投影实现了移动设备上单窗口内地理信息的连续性展现,并提出了一种基于MX-CIF四叉树的地物取舍算法,引入取舍评价函数,优化了变比例尺过渡区域的显示效果,并提高了显示效率。本文接着分析了目前流行的卫星定位系统,着重介绍了拥有自主知识产权的北斗卫星导航系统,并基于第一代北斗用户终端实现了移动平台上北斗定位通信系统,为地质调查提供了稳定、实时的位置信息。基于上述关键技术的研究,本文设计并且实现了面向数字地质调查的移动GIS原型系统,并通过系统测试了变比例尺可视化模块。最后,总结了木文的研究成果,并对本文中针对面向数字地质调查的移动GIS关键技术研究的不足之处进行了讨论。
[Abstract]:The application of mobile GIS platform in digital geological survey greatly improves the efficiency of geological survey. Driven by the actual requirements of digital geological survey, this paper focuses on the key technologies of spatial data tube, variable scale visualization and Beidou location communication in mobile GIS platform. This paper first analyzes the theory and technology of spatial data management on mobile devices, designs a memory management strategy for data editing, and optimizes the performance of data editing on mobile devices. Then, this paper uses variable scale visualization technology to realize the continuous display of geographical information in single window of mobile device by using four-prism projection, and puts forward a ground object selection algorithm based on MX-CIF quadtree. The selection evaluation function is introduced to optimize the display effect of the transition region with variable scale and to improve the display efficiency. Then, this paper analyzes the popular satellite positioning system, emphasizes on the Beidou satellite navigation system with independent intellectual property rights, and realizes the Beidou positioning communication system on the mobile platform based on the first generation Beidou user terminal. It provides stable and real-time location information for geological survey. Based on the research of the above key technologies, this paper designs and implements a mobile GIS prototype system for digital geological survey, and tests the variable scale visualization module through the system. Finally, the paper summarizes the research results of wooden text, and discusses the shortcomings of the research on key technologies of mobile GIS for digital geological survey in this paper.
【学位授予单位】：北京林业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P208

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