The invention relates to a traffic restoration method based on a trajectory reconstruction technology, and the method is characterized in that the method comprises the steps: filtering the travel time of a road segment, and generating an effective travel time set of the road segment; and carrying out trip chain separation. And track reconstruction is carried out aiming at different missing degrees of the track by adopting a combination of a road network topological relation, a shortest path algorithm and a particle filter algorithm. Influence factors such as candidate path trajectory testability, candidate path trajectory preference, candidate path travel time consistency, candidate path distance, candidate path high-level road proportion and the like are analyzed in a particle filtering algorithm. And through a macroscopic and microcosmic combination method, the flow of each node in each flow direction is corrected in a deflection manner. According to the method, single-intersection detection data, multi-intersection trajectory data, travel behavior characteristic data and the like can be fully utilized, so that the accuracy of flow repair is greatly improved, and all nodes have multi-dimensional and full-period flow data with relatively high accuracy.
本发明涉及一种基于轨迹重构技术的流量修复方法,其特征在于,包括进行路段行程时间过滤、从而生成路段有效行程时间集合。进行出行链分离。采用路网拓扑关系、最短路径算法、粒子滤波算法组合针对轨迹不同缺失程度进行轨迹重构。在粒子滤波算法中分析了候选路径轨迹可测性、候选路径的轨迹偏好、候选路径路径旅行时间一致、候选路径路径距离、候选路径高等级道路比例等影响因素。并通过宏观与微观结合的方法,有偏斜的修正了各节点各流向的流量。本发明可以充分利用单路口检测数据、多路口轨迹数据、出行行为特征数据等,大大提高修复流量的准确性,使得所有节点均具有较高准确度的多维度、全周期的流量数据。
Trajectory reconstruction technology-based traffic restoration method
一种基于轨迹重构技术的流量修复方法
2022-04-12
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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