基于手机切换定位的交通路网标定方法

Method of Handover Road Network Calibration Based on Mobile Phone Handover Location Technology

摘要:

总结了基于手机切换定位的道路行程车速采集技术基本原理，明确提出道路行程车速的计算流程和切换路网标定方法.从无线通信信号传输特征角度揭示出切换扰动的原因和规律，分析切换扰动对切换路网标定的影响，并应用搜寻有向图最大权重路径的方法进行切换路网标定.从切换序列稳定性、切换位置精度和实际手机样本量3方面对标定方法的适用性进行分析，指出对于开阔、低密度开发环境下的高速公路及红线宽度较大的城市快速路的适用性较好.

Abstract:

The paper presents a review of the principle of road travel speed data collection based on mobile phone handover location technology and the road travel speed calculation and handover road network calibration method.Handover fluctuation seriously affects handover road network calibration and the cause is explained by wireless signal propagation.The calibration method is proved by searching the path with the biggest weight in directed graph. Finally, the applicability of this method is discussed about the handover sequence stability, handover coordinate precision, mobile phone sample number. The calibration method is of great applicability in the open and low density areas.