摘要
当前时空数据模型多以描述空间实体的离散变化为主,在对空间运动对象分析的基础上,提出了支持空间对象连续运动的表示方法,该方法同时也能表示空间实体的离散变化,为建立连续运动空间对象的时空数据模型打下了基础。
Most of spatio-temporal data models are used to describe the spatial entities changing in discrete steps now. After analyzing spatial moving objects, a new representation is proposed, which supports spatial objects moving continuously and can represent those changing in discrete steps. This is a foundation for building spatio-temporal data model of moving objects.
出处
《地理空间信息》
2005年第5期8-10,20,共4页
Geospatial Information
关键词
空间运动对象
时空数据模型
数据类型
spatial moving objects, spatio-temporal data model
spatio-temporal data type
