OH Spatial-Temporal Data Model for Moving point Objects

摘要

Based on the core idea of OPH model,A spatialtemporal data model,named OH model,for moving point object is presented, the definition introduces a characteristic variable-feature (include space geometry and non-spatial attributes) which changes over time, to solve issues of OPⅡ model which only iesearches on moving area not well reflect the characteristic value of moving objects changes over time. The model has two kinds of spatial-temporal geometries,which are observation geometry,named O and history geometry,named H. The definition of OH is given,and then by using point set operations to populate and calculate the value of O and H is populated and calculated. The spatial-temporal topological relations are defined between moving point object and other moving objects, then by using spatial-temporal topological relation and space methods,verifies this model with the results of spatial-temporal query.