摘要
地图匹配是通过软件手段来校正导航系统中定位误差的一种技术。文中从降低系统的误匹配率以及提高地图匹配算法有效性的角度出发,给出了一种综合地图匹配算法。该算法将快速但匹配误差率较高的改进型垂直投影法和低速但匹配误差率较低的历史轨迹推算法相结合,通过一个综合判断步骤,对不同路段采用不同匹配算法进行校正,从而达到较高匹配速度和较低匹配误差率的目的。由实际GPS轨迹数据匹配结果表明,该方法在复杂路网,尤其是在交叉路口中具有较好地匹配效果,且效率较高,具有一定的实用价值。
Map-matching is a technique that corrects positioning errors in navigation system by means of soft- ware. The paper presents an integrated map-matching algorithm for decreasing the false matching rate and increasing the effectiveness of map-matching. A higher matching speed and lower matching error rate is achieved through a com- prehensive judging procedure which corrects different sections by different matching algorithms. The technique com- bines the vertical projection algorithm which has a high speed performance but high incorrect matching rate using the historical trajectory calculation algorithm which has a low speed performance but low incorrect matching rate. The ac- tual matching results of the GPS trajectory data show that the presented technique has better matching effect in com- plex networks, especially in crossroads. The technique has higher efficiency and practical value.
出处
《电子科技》
2014年第12期20-23,共4页
Electronic Science and Technology
基金
福建省教育厅A类科技基金资助项目(JA13368)
