一种面向实时显示的海量空间数据存取技术

总结海量数据存取技术相关成果；建立海量空间数据的全球四叉树层次细节模型．以一致的逻辑模型和编码方式管理各类空间数据；基于IP网络分布式存储海量数据，设计客户一服务器模型下的数据读取算法；分析磁盘工作原理以确定效率瓶颈，并据此设计了高效的空间数据存储结构。该系统经实践证明，完全满足海量空间数据实时可视化的需要。

A Storage Technique of Large-scale Space Data for Real-time Display

The paper firstly summarizes the interrelated fruits of accessing technology of large-scale data, then founds the global quadtree level of detail of large-scale space data, which manages various types of space data in consistent logic model and coding mode. Based on IP network to store large-scale data in distributed form, it designs an arithmetic of data read in client-server model. It also analyzes the working principle of magnetic disk so as to conform the efficiency bottleneck, on which is based to design efficient storage structure of space data. Experiments prove that the system completely meets the need of real-time visualization of large-scale space data.