The invention discloses a vehicle track reconstruction method considering an overtaking behavior, and the method comprises the following steps: (1) searching the observation record of the same vehicle passing through upstream and downstream fixed detectors according to the license plate information, and extracting the speed and time information; (2) a cubic polynomial curve is selected to represent a vehicle track form, a polynomial model is established for each vehicle, parameters are calibrated, and the initial driving track of the vehicle is simulated; and (3) considering the randomness of the overtaking behavior, searching the overtaken/overtaken vehicles in the driving period, and determining the specific overtaking/overtaken moment. And (4) creating a vehicle sequence variable, and calculating the sequence variable quantity of each vehicle. And (5) establishing a piecewise linear vehicle sequence change model, and calculating the vehicle sequence in each time step. And (6) determining vehicle positions under free flow and non-free flow conditions in each step length, selecting a minimum value as a real vehicle position, and reconstructing full space-time vehicle running track information.
本发明公开了一种考虑超车行为的车辆轨迹重构方法,该方法包括如下步骤:(1)根据车牌信息检索同一辆车经过上下游固定检测器的观测记录,提取速度及时间信息。(2)选用三次多项式曲线表征车辆轨迹形式,对每一辆车分别建立多项式模型并标定参数,模拟车辆初始行驶轨迹。(3)考虑超车行为的随机性,对于超车/被超车辆,搜索其在行驶时段内超越/被超越的车辆,确定超车/被超车的具体时刻。(4)创建车辆顺序变量,计算每一辆车的顺序变化量。(5)建立分段线性车辆顺序变化模型,计算每一时间步长内的车辆顺序。(6)确定每一步长内自由流和非自由流情况下的车辆位置,选取最小值作为车辆真实位置,重构全时空车辆运行轨迹信息。
Vehicle track reconstruction method considering overtaking behavior
一种考虑超车行为的车辆轨迹重构方法
2023-08-04
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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