EFFICIENT MODELLING OF HEIGHT DATUM BASED ON GIS
Since the proposal of Digital Earth,its research and applications are continuing to be deepened,and now Smart City is more indepth implementation of the Digital Earth.The unification of global or regional vertical datums has always been one of the main geodesy studies to achieve Smart City,as Smart City must first realize the seamless integration of multi-source geo-dataset.This paper introduces spatio-temporal data management and interactive visualization into the entire process of vertical datum modelling.We demonstrate that the efficiency of modelling is greatly improved.In this paper GIS database is used to manage all dataset such as tidal station data,gravity field model data,GPS leveling data,and vertical datum data for evaluation and analysis.We use geographic information visualization technique to graphically display the results,together with the interactive browsing,to convert tedious digital information to easy-to-understand images.Consequently,researchers can quickly and comprehensively grasp the macro and micro information.Finally,an efficient and interactive prototype operating platforms for vertical datum modeling is constructed based on GIS.
Height Datum GIS interactive visualization
Qinghua Qiao
Key Laboratory of Geo-Informatics of State Bureau of Surveying and Mapping Chinese Academy of Surveying and Mapping,Beijing,China
国内会议
苏州
英文
209-213
2014-05-14（万方平台首次上网日期，不代表论文的发表时间）