国际地球参考框架数据管理的瓶颈与研究策略

BOTTLENECK AND RESEARCH STRATEGY OF DATA MANAGEMENT UNDER ITRF

分析了ITRF数据管理的瓶颈——甚大规模对称矩阵的数据管理问题。提出将对称矩阵从半结构化形式转换成全结构化且具有固定字段数的关系型表,再用扩展关系模型原理,建立基于对称-关系模型的数据库。这种对称-关系数据模型理论既能用于管理关系型的数据表又能管理对称矩阵。若用于附甚大规模对称矩阵的ITRF成果数据集,可提高ITRF成果的数据存储、管理和网上发布的效率。

Data management of the large-scale symmetrical matrices, as a bottleneck of the data management under International Terrestrial Reference Frame （ITRF） is discussed. We set up a symmetry-relationship model to convert the half-structural matrices into full-structural relationship tables with fixed fields,then set up the symmetry-relationship database in accordence with extended relationship principles. This symmetry-relationship model can be used to improve the efficiency of the information management under ITRF.