中文摘要：

针对当前P2PGIS研究在多尺度、多图层空间矢量数据索引方面的不足,从应用实际出发,提出了一种新的P2P空间矢量数据索引网络。该网络扩展了已有的混合式索引网络结构体系,利用金字塔融合多尺度构建分布式四叉索引树;在此基础上,提出相应的分布式空间矢量数据的查询算法,并用数学方法进行了性能分析。原型系统性能测试结果表明,该索引网络能有效地减少网络负担,提高空间索引的效率。

英文摘要：

In allusion to the insufficiency of current P2PGIS researches in space vector data index of multi-scale and multi-la-yer,this paper proposed a new P2P spatial indexing network on vector data in view of practice.This network expanded the existing hybrid indexing network architecture,and built the distributed quad-tree which fused multi-scale using pyramid technology.In addition,this paper proposed a query algorithm for distributed P2P spatial vector data,and analyzed the performance of the algorithm by mathematical method.The testing result of the prototype system shows that the indexing network can reduce network burden and improve indexing efficiency effectively.