Skyline Web-based 3d Gis Applications

With the rapid development of network technology, virtual reality technology, database technology, spatial information technology and so on, the Web-based 3D GIS in the practical application of "Digital Earth", "Digital City", "Digital Territory", "Digital Mine", "Digital Basin", etc. is demanded more and more widely. It has gradually become a research focus in Geographic Information System.This paper summarizes the research status of Web 3D GIS in both domestic and overseas, and compares the advantages and disadvantages of various techniques and platforms. On this base, the key technology of Web 3D GIS, Skyline-based three-dimensional modeling and System development related algorithms are researched. Finally, taking some town planning application for example, the design and implementation of Web 3D GIS based on Skyline are expatiated.The main research work of this dissertation includes:1.This study is based on the Skyline. By using WFS, mass vector and model data are published with the way of Web services. At the same time, the data transmission is launched by the way of streaming. It can realize the real-time display effects--- when you visit the three-dimensional scene, "see where,show where", and improve the speed of data transmission.2.Combining the application of ArcGIS with Skyline can play their respective advantages of the two software and achieve some spatial analysis functions under the 3D scene, such as visible analysis, path analysis and so on. It is an innovative point of this article, which we make some beneficial attempt and exploration on the spatial analysis and process of Web 3D GIS.All the work in this dissertation represents certain use for reference to the further research of three-dimensional Geographic Information System based on Internet\Intranet.