期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII Part B4
页码：687-692
出版社：Copernicus Publications
摘要：Today's Internet GIS's centralized components have limited the system scalability in that they are single points of failure and system performance bottleneck. As a solution, we propose a new fully decentralized Internet GIS architecture, called P2P Spatial Access Method (P2PSAM). P2PSAM removes the centralized components by integrating dynamic spatial indexing algorithms (e.g., QuadTree) with fully decentralized P2P networks (e.g., Distributed Hash Table). Our experiments demonstrated that P2PSAM is able to scale to several millions of spatial data objects in a P2P environment without significantly increasing computational and networking overhead
