Realization of voice route guidance module of vehicle navigation system

This paper studied the relation between route guidance module and other modules in vehicle navigation system. The advantages of voice route guidance function were presented. The main algorithm steps based on GIS were developed, with the route planning module and the positioning module, the methods to realize three key sub-modules: generation of driving instruction, planned route track and generation of voice guidance information were discussed. Its application results show that the module can accuraely generate voice guidance information.