Abstract
Abstract. 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.
Highlights
Since Gore brought the concept of Digital Earth, spatial data applications are growing faster than before in popularity
The State Bureau of Surveying and Mapping is responsible for basic geographic information update, while other geographic information are produced by other departments, companies and social organizations themselves
Geographic information systems made an astonishing development in the last 30 years, which is widely used in resource surveys, environmental assessments, disaster prediction, land management, urban planning, telecommunications, transportation, military, public security, water and power, public facilities management, agriculture, forestry animal husbandry, statistics, business finance almost all areas of whole society
Summary
Since Gore brought the concept of Digital Earth, spatial data applications are growing faster than before in popularity. With social progress and technological development, there is a growing emphasis on GIS industry, more and more deeply combining applications continue to emerge. These applications require high precision and current spatial data. The application problem of multisource spatial data fusion is increasingly urgent, so the relative scarcity of geographic data is one of the biggest limitations of the rapid development of the geographic information industry. To solve this problem, we firstly have to establish an unified vertical datum. This article will introduce temporal GIS technology into the entire process of vertical datum conversion, and to accelerate the process of vertical datum modelling
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
