测绘学报 ›› 2014, Vol. 43 ›› Issue (2): 208-220.

• 学术论文 • 上一篇    下一篇

城市汽车导航中一种改进的D-S证据理论地图匹配算法

李珂,杨杨,邱雪松   

  1. 北京邮电大学
  • 收稿日期:2012-09-17 修回日期:2013-12-04 出版日期:2014-02-20 发布日期:2014-02-28
  • 通讯作者: 李珂 E-mail:victor4556@bupt.edu.cn

Improved Map Matching Algorithm Based on D-S Evidence Theory

  • Received:2012-09-17 Revised:2013-12-04 Online:2014-02-20 Published:2014-02-28

摘要:

车联网中基于D-S证据理论的地图匹配算法,通常考察定位点到候选道路的投影距离和车辆行驶方向与候选道路的角度差这两种证据。目前城市交通网络结构日趋复杂,此算法得到的匹配结果有一定的局限性,匹配精度也无法满足车联网技术的需求。随着GPS等定位设备的不断发展与改进,车辆的行驶速度与定位时间间隔等数据已可以准确获取,在此基础上,本文对车辆的可达性信息进行考察,作为新的证据与传统证据融合后得到的结果进行D-S证据的二次融合。除此之外,本文针对城市环境中不同道路拓扑结构,对传统算法中的位置信息和车辆行驶方向信息的可靠性参数进行仿真训练,得出更为精确的可靠性参数值以供改进的算法使用。通过仿真实验表明,改进后的算法的匹配精度和稳定性得到了极大的提高,可以更好地适用于城市复杂路网中地图匹配的问题。

关键词: 车辆导航, 地图匹配, D-S证据理论, 可达性信息, 证据可靠性参数

Abstract:

The map matching algorithm based on D-S evidence theory of vehicle-borne navigation system often uses position and angle evidences in map matching algorithm, but with the increasingly complex structure of the transport network in the city, this algorithm results have some limitations and the matching accuracy can not meet the need of vehicle networking technology. With the continuous development of GPS and other positioning equipment, the data of vehicle speed and positioning interval can be obtained accurately. On this basis, this article put reachability evidence as the third evidence fusion with the integration result of the first two evidence. What’s more, by simulation training for different road network topology, we obtained more accurate position and angle reliability parameters for practical application. Results of simulation show that this map matching algorithm dramatic increase in accuracy and stability, especial suited for complex road network in cities.

Key words: vehicle navigation, map matching, D-S evidence theory, reachability information, evidence reliability parameters

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