Related Technology Research on Navigation Electronic Map

The paper discusses the main difference between the navigation electronic map and the general electronic map, analyzes the structure of the navigation electronic map system from the function and constitution, discusses the domestic navigation electronic map on the main source of data as well as the acquire method, puts forward two navigation data updating methods: the version - incremental navigation data updating method and the push type service - online data dynamic updating method , offers the production process of navigation electronic map and looks ahead to the development trend of the domestic navigation electronic map.