Research on Integration and Updating Method of Multi-sources Electronic Map Data

According to the demand of navigation data's production in our own country,as well as the features of multi-sources navigation data in vector form—especially the low frequent updating,the high repeated acquisition,and the heavy meaningless workload,this paper raised a feasible and effective method focusing on the integration of these data based on researching relevant data model,spatial transformation principle and related error evaluation theory,and supported the production and application of the electronic navigation maps theoretically and technically.