Fourth International Conference on Computer and Information Technology (CIT'04)
Query and Trigger of Moving Objects in WebGIS Environment
Wuhan, China
September 14-September 16
ISBN: 0-7695-2216-5
Fengli Zhang, University of Electronic Science and Technology of China
Xinggao He, University of Electronic Science and Technology of China
Zhinguang Qin, University of Electronic Science and Technology of China
Mingtian Zhou, University of Electronic Science and Technology of China
In thi9s paper we illustrate the architecture of the WebGIS environment, present a model of moving objects in cargo delivery system. This model will capture spatial and temporal aspects of the moving objects and incorporate the uncertainties associated with moving objects. We will give the operators and trigger difinition over time and space. Moreover we will present special triggers which can be used to ensure that the answer-set to a spatiotemporal continuous query issued by a moving object, and develop the cargo delivery system based on our model.
Index Terms:
moving objects, trigger, Webgis, query
Citation:
Fengli Zhang, Xinggao He, Zhinguang Qin, Mingtian Zhou, "Query and Trigger of Moving Objects in WebGIS Environment," cit, pp.770-775, Fourth International Conference on Computer and Information Technology (CIT'04), 2004