Xiaoqiu Le

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Mobile computing system based on personal digital assistant (PDA) products has been used widely, and Locationbased service (LBS) is one of the most promising application directions of GIS. It is important to integrate the mobile computing technology and GIS technology to meet the need of LBS. The purpose of the paper is to propose a solution of mobile GIS(More)
In this paper, we present a data model for 3D geometry and topology in 3D-GIS. This model has simple character to render and load. Query and spatial analysis functions can be added to the data model. This data model can also integrate GIS, virtual reality and the Internet. Models with different levels of detail can be combined and transfer progressively.(More)
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