关键词: 全空间信息系统, 多粒度时空对象, 多粒度时空对象数据模型, 空间数据模型, 地理信息系统, 空间信息系统

Abstract:

The pan-spatial information system (PSIS) is a spatial information system that describes dynamic and complicated world from micro to macro perspective. Its theory is based on data model of spatio-temporal objects of multi-granularity. In order to determine the specific content of spatio-temporal object model of multi-granularity, the basic framework for illustrating the characteristic of spatio-temporal object of multi-granularity is required. In order to model spatio-temporal object of multi-granularity practically, the modelling process for the data model of spatio-temporal object of multi-granularity is required. Firstly, we analyze the relation and difference between the pan-spatial information system and the traditional GIS from five aspects: data model, data management, visualization, spatial analysis and practical application. Then, we analyze the shortcomings of spatial data model of traditional GIS from six aspects: space category, dynamic change, complex relation, cognition and behavior, visualization technology and analysis of spatio-temporal big data. We also put forward seven characters of spatio-temporal object of multi-granularity: multi-granularity, multi-type, multi-modality, multi-reference system, multi-association, multi-dimensional dynamic and multi-autonomous. We define the descriptive framework of data model of spatio-temporal object of multi-granularity consisting of spatio-temporal reference, spatial location, spatial morphology, composition structure, association relation, cognitive ability, behavioral ability and attribute characteristics. Finally, we put forward the modeling process and the idea of data model of spatio-temporal object of multi-granularity on the basis of the analysis of the modeling process of spatial data model of traditional GIS.

Key words: pan-spatial information system, spatio-temporal objects of multi-granularity, spatio-temporal data model of multi-granularity, spatial data model, geographic information system, spatial information system