The Design And Development Of Embedded Navigation And Orientation GIS

Geographic Information System (GIS), one research technology in geography that develops rapidly from 1960, is one kind of database management system to acquire, search, analyze and display the spatial location data. GIS is involved with several subjects and what it deals with and manages are geographical-spatial data and the relations between them, such as spatial orientation data, graphics data and attribute data. GIS is used to analyze and deal with multifarious phenomenon and processes in one geographic area and help to resolve complete problems in programming, decision-making and management.Along with the rapid development of the computer, CPU, EMS memory and storage devices don't restrict the function of GIS anymore, which urges GIS to progress not only in theory but also in actual applications and also along with evolution of computer towards minisize, portability and applicability and the emergence of embedded devices, such as PDA, embedded GIS (eGIS) becomes one of the hot and important research directions in the development of GIS today.Embedded GIS is a new application yield of GIS and is one outcome of the combination of GIS and embedded devices. It is the embranchment, extension, supplement and development of GIS. The combination of embedded GIS and PDA to realize the real-time display of maps in the motive environment has a good application foreground. In this thesis, the author firstly introduces basic knowledge of GIS, GPS and embedded system, then analyzes pivotal technologies in GIS, such as the organization and storage of spatial data, spatial query and analysis and the output of electric maps and then analyzes and designs one embedded navigation and orientation GIS-eTrack used in PDA, and at last, realizes it using Embedded Visual C++3.0 and eSuperMapl.l.