Design And Implementation Of The Map Display In Vehicle Navigation System

In order to adapt to the need of military transformation and modernization construction, The author combines place troops field battle conductor an automation need, based on embedded system platform, analysis of the current major software development and infrastructure, a thorough research and design on autonomous vehicle navigation system is carried out by the view of practical application.At the same time, discussed the map displaying.This article first analyzes satellite positioning in the military field applications, Reviewed the Vehicle location and navigation systems in the research and development, and described the vehicle location and navigation systems important position. According to the current software and hardware development of the actual situation, complete field forces vehicle location and navigation system input, output and control part of the hardware. In comparing the development of a variety of methods to determine based on the Windows CE operating system software program. Focused on the field forces vehicle location and navigation system of electronic navigation maps, map data and index organizations, positioning module, map matching module, the module path planning, route guidance module, wireless communication modules, human-computer interaction interface and real-time map display module,The nine modules, such as design, Shapefile completed a map format, including Metafile (*. shp) index file (*. shx) and property files (*. dbf) analysis and realized the format of the map reading and drawing. Research on the key technology-the index of space technology of field forces vehicle location and navigation system in-depth, for features of vehicle navigation map data,made a new tree index Hilbert-R algorithm,describe the algorithm process detailed. Discussed the display method of two-dimensional map and a half,in real-time rendering the map, To enhance the performance of display,use the display technology of LOD. Finally,discussed the approach of two-dimensional map display and a half arid two-dimensional respectively,and give the test results chart.