Study on Key Technology of HPSIN-Based Vector Geo-data Online Service

摘要

P2P technology can avoid "single point of failure" and "hot spots bottleneck" problems, which exist in traditional centralized system of spatial information. Hybrid P2P Spatial Indexing Network combines distributed Quad-Tree with DHT-based Chord network to maintain both query efficiency and system load balance. In this paper, key technology of HPSIN based distributed vector geo-data online service is studied, the pattern of vector geo-data organization based on Linking Mechanism, segmentation and lossless reconstruction are proposed. This novel organization pattern can be used to form a loosely and globally distributed topology. Segmentation and lossless reconstruction method takes advantage of linking information, to reconstruct the damaged Geometries lossless. Comparative experiment shows that the organization and the associated algorithms are lossless and reliable.