Journal of Geo-information Science >
Vehicle Trajectory-map Matching based on Particle Filter
Received date: 2019-11-27
Request revised date: 2020-02-13
Online published: 2021-01-25
Supported by
National Natural Science Foundation of China(41631175)
Copyright
Vehicle trajectory is a time series geospatial location sampling data. The traditional vehicle trajectory-map matching methods are mainly computed by ways of global or local incremental optimization, which limited the relative independence in matching process of the trajectory data in spatial temporal situation. To address this problem, this paper proposes the method of computing matching relationships between vehicle trajectory and road map based on the Particle Filter (PF) method. First, construct the road network from the road dataset, and search the neighboring nodes from the road network based on the vehicle sampling locations along the moving direction that are detected from the vehicle trajectory. Then, construct the motion model based on the vehicle trajectories, randomly generate particles on the road arcs that are related to the searched nodes, and move the particles along the sampled road segments according to the trajectory motion model. Second, compute the motion states of the particles according to the motion model in each time state, get the distance errors between the particles and the vehicle position sampling locations, obtain the particle weights based on the Gaussian probability density function, resample particles based on the random resampling method, and then update the motion states of particles iteratively. Finally, compute the accumulated weights of the particles in each of the topologically related road arcs, which are searched by the neighboring nodes, and calculate the matching relations between the vehicle trajectories and the map based on the accumulated weights of the particles. With this method, the experiments were conducted based on the vehicles' trajectories, which were two long sequenced trajectories with the total length > 102 km. The results showed that 85.51% and 93.01% correctness rates of vehicle trajectory-map matching experiments had been achieved for each of the vehicle trajectories. Besides, the motion of the vehicle sampling locations could be reflected by the spatial-temporal movements of the particles, where particles started to follow the motion of the vehicle sampling locations after a few time states. The results showed that it could achieve the accurate matching relations between the vehicle trajectories and the road map.
ZHENG Shichen , SHENG Yehua , LV Haiyang . Vehicle Trajectory-map Matching based on Particle Filter[J]. Journal of Geo-information Science, 2020 , 22(11) : 2109 -2117 . DOI: 10.12082/dqxxkx.2020.190738
表1 车行轨迹采样信息Tab. 1 The sampling information of vehicle trajectory datasets |
轨迹 | 采样点数 | 总长度/m | 采样时长/s |
---|---|---|---|
车行轨迹1 | 1251 | 77 090 | 12 500 |
车行轨迹2 | 587 | 25 397 | 5860 |
表2 车行轨迹-路网匹配结果统计Tab. 2 The statistics of the vehicle trajectory-map matching results (m) |
实验方法 | 轨迹 | 匹配长度 | 正确匹配 | 错误匹配 | 未匹配 |
---|---|---|---|---|---|
距离判别法 | 车行轨迹1 | 77 746 | 64 994 | 12 752 | 0 |
车行轨迹2 | 26 424 | 21 252 | 5172 | 0 | |
本文方法 | 车行轨迹1 | 71 220 | 65 921 | 5299 | 8882 |
车行轨迹2 | 25 057 | 23 621 | 1436 | 2578 |
[1] |
吴华意, 黄蕊, 游兰, 等. 出租车轨迹数据挖掘进展[J]. 测绘学报, 2019,48(11):1341-1356.
[
|
[2] |
高文超, 李国良, 塔娜. 路网匹配算法综述[J]. 软件学报, 2018,29(2):225-250.
[
|
[3] |
|
[4] |
|
[5] |
高强, 张凤荔, 王瑞锦, 等. 轨迹大数据:数据处理关键技术研究综述[J]. 软件学报, 2017,28(4):959-992.
[
|
[6] |
张健钦, 李明轩, 段颖超, 等. 一种改进的快速浮动车地图匹配方法[J].测绘通报,2017(1):87-92.
[
|
[7] |
刘张, 王心迪, 闫小勇. 面向复杂城市道路网络的GPS轨迹匹配算法[J]. 电子科技大学学报, 2016,45(6):1008-1013.
[
|
[8] |
吴涛, 向隆刚, 龚健雅. 路网更新的轨迹—地图匹配方法[J]. 测绘学报, 2017,46(4):507-515.
[
|
[9] |
|
[10] |
|
[11] |
高需, 武延军, 郭黎敏, 等. 基于偏好的个性化路网匹配算法[J]. 软件学报, 2018,29(11):3500-3516.
[
|
[12] |
|
[13] |
|
[14] |
李清泉, 胡波, 乐阳. 一种基于约束的最短路径低频浮动车数据地图匹配算法[J]. 武汉大学学报·信息科学版, 2013,38(7):805-808, 885.
[
|
[15] |
朱递, 刘瑜. 一种路网拓扑约束下的增量型地图匹配算法[J]. 武汉大学学报·信息科学版, 2017,42(1):77-83.
[
|
[16] |
|
[17] |
|
[18] |
|
[19] |
|
[20] |
|
[21] |
黄小平, 王岩, 廖鹏程. 粒子滤波原理及应用——MATLAB仿真[M]. 北京: 电子工业出版社, 2017: 1-7.
[
|
/
〈 | 〉 |