基于GPS/DR的地图匹配方法的研究与实现

Research and implementation of map matching method based on GPS/DR

研究了地图辅助定位技术在GPS/DR组合定位系统中的应用,给出了一种基于D-S证据推理的地图匹配算法,该算法通过对车辆轨迹与数字地图模块提供的路径相比较,把基于各种传感器的车辆位置与道路网络联系起来,并通过匹配过程来确定车辆关于地图的最大可能位置。仿真实验结果表明,应用该地图匹配算法能够有效的提高组合定位系统的定位精度、减小误差、改善对航线的跟踪质量。

The application of GPS/DR integrated positioning system of a map assisted positioning technology is introduced, which provided a map-matching algorithm based on D-S evidence reasoning. The algorithm combined the location of vehicles from sorts of sensors and road networks through comparing vehicles track with the path provided by map modules, and then determine the greatest possible location of vehicles on the map through matching process. Simulation results show that the map matching algorithm reduce errors and improve the integrated positioning accuracy of the positioning system and the quality of the tracking route.