基于GPS的地图匹配方法的研究与实现

The Study and Implementation on the Map-matching Based on the GPS

本文讨论了车辆导航系统中GPS实时信息在数字地图上的匹配问题。分析了由于GPS精度误差以及道路网复杂等因素而可能造成直接定位不准确问题．提出了基于GPS实时信息的地图匹配算法，一方面考虑了GPS点的轨迹与道路网的相似性，另一方面也充分利用了GPS数据中有关车辆的实时信息，如航向等，提高了定位的准确性。

This paper discusses the problem of the GPS real time information locating on the digital map in the vehicle guidance system. Analyzing the factors caused by deviation of GPS and complexity of road network which leads to the inaccurate of direct location. A map-matching method based on the GPS real time information is presented, which considers the similarity between the tracks of GPS points and road network, also uses the GPS real time information of the vehicle ,such as navigation, the method improves the accurate of location.