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Embedded devices are everywhere, the embedded GIS is widely used in various fields, the raster data to become one of the most important data source embedded GIS. We will rule the pixel array map of the distribution of spatial features or phenomena (such as remote sensing image, terrain scan) called raster map. Huge amount of data in the grid map file format diversity, and embedded systems in order to control the cost, size, power consumption, storage space and memory resources to try to control, which caused difficulties to the raster map embedded GIS. How provide efficient call interface is an important issue facing embedded GIS raster data of this study, \Embedded GIS raster data the engine (hereinafter referred EGIS-RDEngine), is an embedded platform invoke raster data for screen display and map browsing application interface, which shields the grid map file format, the data organization and management, to provide raster data call interface, base map services embedded GIS raster map display and map browsing, and combined with vector data the hybrid map display, spatial analysis and query retrieves joint application. Specific work as follows: 1, the integration of data organization and management, the establishment of a grid database, embedded GIS data source. 2, according to the database structure object-oriented data model, designed GIS data access module and the map display and control module, a of EGIS-RDEngine data access and mapping interface design. 3, to discuss the the GIS memory management methods and data scheduling policy environment of limited resources to achieve the raster map display, zoom, roaming and rotating operation. 4 coordinate matching technology of vector data and raster data overlay display and the union query analysis application ideas. Established in VxWorks platform embedded geographic information systems, validation papers designed of EGIS-RDEngine feasibility and availability. The final results of this thesis is to run in the Windows platform raster data preprocessing data preparation tools, and run the application in the embedded platform called GIS raster data engine in a variety of embedded systems platform.
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