| Since the emergence of Geography information system(GIS),it has been used widely.Countries and large companies has invested greatly to develop GIS with powerful performance. Also,with the fast and rising development of Embedded technology,Embedded hardward/software has made rapid progress to gain more powerful performance.The combination of Embedded technology and GIS makes a new industry-Embedded GIS.Embedded GIS can be used in lots of fields,GIS navigation, for instance, is nearly the essential part of Middle-class/advanced cars.Besides,GIS is playing an important role in military affairs,national defense and smart phone fields.Therefore,it is of great significance to take an active part in research on GIS technology both in our native military and economic development.The target of this paper is to develop Embedded GIS with basic GIS functions on specified Davinci hardware platform with limited source as requested by the task.In the process of implementation,it mainly refers to Embedded technology,structure of GIS space data,electronic map,Man-computer Interaction,etc.The system makes Davinci TMS320DM6446 as hardware platform,Linux as operating system,native MiniGUI as interaction interface.At last,it realized the embedded GIS with basic GIS functions under the condition of limited hardware and software source.In this paper,it first summarizes and analyzes the development of Embedded GIS home and abroad,then chooses the right software platform through comparaing and analyzing,the next finishes transplant of MiniGUI and the development of input engine based on MiniGUI.What's more,it analyzes structure of GIS space data and transformation of geographic coordinate.At last,this paper realizes Embedded GIS with basic GIS functions which makes Davinci TMS320DM6446 as hardware platform,Embedded Linux as software platform and native MiniGUI as Man-computer Interaction interface. |
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