面向分片地图的多分辨率格点数据统一存取方法

A unified accessing method of multi-resolution grid point data for tiled map services

不同的海洋环境要素对象、数据文件格式及数据分辨率使得对异构且离散的场数据访问和应用受到了限制.设计了面向分片地图的统一数据多级存储组织架构,定义了适用于不同分片地图对象的海洋场数据组织方式,提出了多分辨率格点场数据分层和分块方法,并通过建立索引编码,实现将多要素、多时次、多深度、多高度的海洋环境场数据按统一维度的小区块存储并管理于多级组织架构中.该方法在海洋环境预报综合信息服务平台的应用中有效支持了异构场数据的整合、时空统计分析及可视化表达等.

The wide variety of marine environmental objects and multi-resolution scientific data bring challenges to the current approaches of data storage and processing.This paper proposes a unified architecture of marine environmental field data storage and organization for tiled map.The diversified multi-resolution field data can be organized into multiple blocks with the unified dimensions after stratification and partitioning.These blocks can be stored and managed in the architecture by index encoding.Its application to the service platform for marine environmental forecasting information shows that the proposed method supports efficiently the heterogeneous data integration,temporal-spatial statistical analysis and visualization.