On the basis of this model , the author put forward a R-tree based Composite Spatiotemporal Index (CST-TREE) and described it s structure and mechanism.

• 并在此模型上提出了一个基于R树的复合时空索引(CST-TREE)机制,定义了节点结构,并分析、描述了此索引的结构及原理。