【摘要】 如何使用时间维来描述空间地理对象的时态性并将其引入到空间数据库中,是目前GIS研究领域的一个热点。本文通过对目前已经研究提出的时间新维型时空数据模型的分析比较,对基态的选择、空间数据采样时间间隔的确定以及数据处理的效率方面进行了进一步的探讨,提出了一种基于多级动态索引和双向链技术的一种改进模型,并在程序中予以了实现,证明了其可行性。更多还原

【Abstract】 How to describe the Tenmporal attributes of spacial geographical objects by using time-dimension and bring it into the spacial database is one of the focuses in the CIS research field at present.This article puts forward an improved model including how to collect the data.the time of collecting data and the efficiency of data processing by analysis and comparison among the existed models.It is based on Dynamic- Multilevel Index and Two-way Chain Technology.In the article,author has vertificated the rationality and practicability of the theorise.更多还原