Research on Mobile GIS Based for Information Collection

With the rapid development of GIS, embedded technology and wireless communication technology, mobile GIS becomes an active research area in the field of GIS. Mobile computing system based on personal digital assistant (PDA) products has been used widely, and information collection is one of the most promising application directions of mobile GIS. The purpose of the paper is to propose a solution of mobile GIS for information collection by studying the difference between PDA and traditional desktop computer. The main contributions include a novel new system architecture and detailed function of each component. Besides, the method of data organization, the visualization of digital maps, spatial data compression, spatial data index, and spatial data transmitting by wireless networks are presented. Based on our strategy, a practical system is developed to prove the validity of our strategy. Experimental results demonstrate our strategy can meet the actual need of the visualization, querying, editing, analyzing and transmitting of spatial information satisfyingly.