基于瓦片金字塔模型的海量空间数据快速分发方法

针对分布式并行环境下海量空间数据的快速显示和浏览问题,提出一种基于分层、分专题的海量空间数据金字塔模型及基于数据库存储方案的瓦片数据快速分发方法.对比分析了瓦片数据在文件式管理和数据库管理两种模式下的存储机制和响应流程,并以时间跨度59年的沙尘暴观测数据为例,验证了该方法不仅能有效地组织管理海量空间数据,实现高效数据互操作,而且在多用户并发访问时,能快速响应客户端请求.

Fast Distribution Method for Large Data Set of Spatial Data Based on Tiles Pyramid Model

In view of the problem of showing and browsing large data set of spatial data in the distributed parallel environment quickly, not onlyone kind of massive spatial pyramid model based on a hierarchical and special topic mechanism, but high access performance tile map service based on database storage scheme under the tiles pyramid model technology were proposed. The mechanism of tile data file management and database management under the storage performance and response process were comparatively analyzed. Moreover, sand and duststorm observation data for 59 years was taken as an example to validate that this method can not only effectively organize and manage massive spatial data to achieve efficient data interoperability, but also quickly respond to client requests in the multi|user concurrent access.