基于数据融合技术的线控协调评价研究

Arterial Coordination Control Evaluation Based on Data Fusion

通过数据融合技术确定车辆实际运行轨迹,本文首先基于三角形相似原理和图形透视原理建立了通过视频图像提取车辆轨迹的模型.在分析视频数据与GPS数据优缺点的基础上,提出利用视频数据标定GPS数据状态的数据融合方法.为了能够标定视频检测器未覆盖的路段的GPS数据状态,提出了标志速度方法.利用融合的车辆实际轨迹,能够实现在线评价线控协调方案的效果,解决了已有需要假设条件评价线控协调方案性能方法的不足.

The paper explores the real vehicle trajectory through data fusion method.First,it formulates a vehicle trajectory extraction model of video data based on the triangle similarity theory and image perspective theory.Then,based on analyzing the advantage and disadvantage of video data and GPS data,the paper puts forward a data fusion method in which the video data is used to identify the GPS data status.To solve the problem that some links are lack of video data,the paper presents characteristic speed method.With the real vehicle trajectory which is obtained via data fusion method,the performance of signal coordination strategy is evaluated on-line and the traditional evaluating method based on some assumed traffic parameters is improved.