Accurate Bus Travel Time Automatic Calculation Based on Multi-Source Data
An accurate bus travel time automatic calculation algorithm was proposed based on multi-source data,including the cell tower location trajectory,public transit network and buses' GPS trajectories.First,the cell tower location trajectory was collected by a smart phone.Second,a sliding time window based algorithm was applied to remove the disturbance data in the cell tower location trajectory caused by cell towers switching "ping-pong effect".Third,the cell tower location trajectory was matched with the public transit network by their spatial corrdation,to obtain locations where the passenger gets on and off the bus.Finally,the cell tower location trajectory was sequence compared with buses' GPS trajectories,to obtain the passenger' s bus travel time.The experiment of bus travels in Nanhai,Foshan shows that,the error of the bus travel time obtained by the algorithm is within 1 minute,which can satisfy the precision requirement of public transit network adjustment and optimization.
NETL
NSTL
万方数据
维普
