城市地理信息系统中若干问题研究

【作者】 周平；

【导师】 孙怡；

【作者基本信息】 大连理工大学 ， 通信与信息系统， 2004， 硕士

【摘要】 地理信息系统是融地球科学、信息科学与计算机技术为一体的高新技术，是推动社会信息化的重要手段之一。它的巨大作用和广泛应用越来越引起人们的关注。 本文选取了与城市地理信息系统相关的四个问题来进行研究。这四个问题包括：多源数据处理、专用城市地理信息系统的开发技术、多屏幕多尺度地图浏览和移动GIS中空间数据传输技术。 在第一个问题中，作者论述了地理数据的多源性，针对几种数据源给出了具体解决方法，并对活断层探测数据进行了处理和集成。在第二个问题中，探讨了ArcObjects组件库的体系结构，讨论了基于ArcObjects组件的专用城市地理信息系统开发技术，并建立了《福州市活断层地理信息系统》。在第三个问题中，探讨了GIS中的显示及人机接口技术，阐述了多尺度显示的原理和方法，并提出了多屏幕多尺度地图浏览与交互方法。在第四个问题中，作者讨论了移动GIS结构、应用服务和关键技术，阐述了用于空间数据传输的OFDM技术的原理，并进行了仿真分析。更多还原

【Abstract】 Geographic Information System (GIS), a kind of high and new technology, integrates Earth Science, Information Science and Computer Technology. As one of the crucial means it promotes the information society development.This paper focuses on four questions related with GIS. These four questions are: multi-source data processing, the technology of developing a special Urban GIS, the research of multi-scale map browse in several screens and transfer technology of spatial data in mobile GIS.As for the first question, the author first discusses the multi-source feature of geographic data, then presents methods to deal with some data sources, and then active faults detection data are processed and integrated. As for the second question, the author first investigate the architecture of ArcObjects components library, then discuss how to establish a special urban GIS calling ArcObjects components, and then Fuzhou Active Faults GIS is set up. As for the third question, the display and man-machine interface of GIS are discussed. The author first introduces the theories and methods of multi-scale map display, then puts up with a method of multi-scale map browse in several screens. As for the fourth question, the author discusses the structure of Mobile GIS, application services and key techniques, then OFDM is discussed about its theory and simulation analysis. This technique will be perhaps used to transfer large volumes of spatial data in the future.更多还原