通过误差来源的分析和误差模型的建立，提出了一种车辆导航中GPS定位测量与数字地图实时配准的地图匹配算法，这使得在现有的基本硬件配置条件下，车辆导航定位精度更高。最后对算法进行了分析，并给出了统计结果。 -Through the analysis of sources of error and error model, proposed a vehicle navigation GPS positioning measurement and registration of real-time digital map map-matching algorithm, which makes the basic hardware configuration of the existing conditions, the vehicle navigation and positioning more accurate . Finally, the algorithm analysis, and gives the statistical results.