Then based on the point-set theory,a qualitative model about spatio-temporal topological relations between moving objects i.

Description of spatio-temporal topological relationship about land utilization with GIS;

According to the spatio-temporal topological relationship of entities, this paper sets forth the recent popularly spatial and temporal topology module, point-set and predicate-set description methods.

The contents include ⑴ According to the description of spatial and temporal topological relationships, the thesis sets forth the integrating expression of spatio-temporal topological relationships.

Aiming at planar moving points in the Euclidean space,based on 9I model,this paper defines spatial topological relations model of reference features,which is expressed as a triple of the topological relations at the three sequential times,describes the categorical topological relations between moving points and reference points,or reference features in lines and polygons.

In order to represent the equivalence of topological relations between a line and a region in vector space,on the basis of 97 topological relations between a line and a region,which are depicted by combinatorial reasoning of spatial topological relations,the questions of equivalent transformation of the basic topological relations types in abstraction process are discussed.

Research on spatial relation representation mainly includes spatial topological relation, spatial cardinal direction relation and spatial distance relation.

Formal description of the topological spatial relationship in GIS;

When searching candidate matching collection for the current feature,a spatial query based on self-definition spatial topological relationship was designed,which narrowed the search scope,reduced the query time,and increased spatial analysis efficiency.