THEORETICAL RESEARCH FRAMEWORK OF GEOGRAPHICAL INFORMATION SHARING
4 Department,Institute of Surveying and Mapping, Information Engineering University,Zhengzhou, china
Theoretical Research Framework of
Geographical Information Sharing
(Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450052, P.R.China)
For Spatial Data Infrastructures (NSDI, GSDI and SDI). Development, Standards.
This paper explains the conception of geographical information sharing at first, then argues that the human’s cognitive process of nature is a process continuously deepened and abstracted, which varied from realistic space to conceptual space then to geographic descriptive space. Based on this viewpoint, the author establishes the hierarchical framework of theoretical research to geographical information sharing.
Within this framework, spatial cognition theory and information communication theory are the bottommost, here spatial cognition studies the basic process and method of human understanding geographic space; and the result of cognition can be inherited and fed back through information communication course, so information communication links the three space mentioned above.
Geographical spatial conception is in midst of this framework. It tries to find the connotation, similarities and differences of different spatial concepts, and construct a most applicable spatial concept to geographical information sharing.
The study of spatial cognition theory, information communication theory and geographical spatial conception can settle the semantic sharing of geographical information.
Geographical data model and standardization of geographical information are the topsides. They are limited by the two layers above, but the study of them can guide directly the technology achieve strategy of geographical information sharing.
Finally, the author expounds each theory in detail, and presents some new opinion for each theory.
Key Words: Geographical Information Sharing；Spatial Cognition Theory；Information Communication Theory；Geographical Spatial Conception；Geographical Data Model；Standardization of Geographical Information