Difference analysis of GPS data base sources based on vehicle location system

GPS system developed quickly after it was introduced. What is more, it caused national military and civilian sector´s attention because of its superior performance characteristics. Over the past decade, GPS technology can achieve an extremely high degree of precision and it is widely applied to many military and civilian. This paper specifies the database for the GPS data obtained from the error to make a specific analysis and introduction, so that GPS information can eliminate the error better and more quickly, and thus the data obtained from GPS, the accuracy of the database has further improved the database system, which further improving the accuracy of GPS so that it can be better in the vehicle positioning.