Development And Application Of Mobile GIS Based On PDA

With the coming of the digital age, GIS is becoming more important than ever. The development of PDA, embedded techniques and wireless networks not only enlarge the applying field of GIS, but also bring new opportunities and challenges to GIS. Mobile GIS become one of the hotspot problems in GIS and one of the mainstream technology for the public. Comparing with traditional GIS, Mobile GIS based on PDA has many new functions for the mobility and extension character of PDA. With the integrating of GPS, RS and communication technology, using PDA, people not only can any where , anytime to gather and update GIS data, but also can anywhere, anytime access GIS service.First, the analysis of the development of PDA and eMbedded GIS bring up in this paper. Second, considering the hardware environment of PDA, one completeness and adaptability GIS vector data model based on PDA is put forward in this paper. Third, applying the GIS data model referred by the author, the mobile GIS based on PDA is designed and developed. Under the environment of eMbedded Visual C++3.0, the Mobile GIS software based on PDA GisTool and GisBrowser which integrated with "3S" is implemented. At last, the Mobile GIS software based on PDA is applied in the fields of digital mapping and spatial information mobile service.