Research On Model Of Trajectory Tracking Based On Base Station

At present,the town has installed more and more surveillance and electronic bayonet,so it is more convenient to make access to the suspect’s surveillance trajectory,electronic bayonet trajectory than in the past.In the paper,we propose a trajectory tracking model based on base station from the perspective of spatio-temporal trajectory matching.The model can get the corresponding mobile phone trajectory which matching the existing surveillance trajectory or electronic bayonet trajectory,then we can realize the identification of the identity of the suspect and the tracking of the mobile trajectory.The main work of the paper includes:Firstly,four kinds of search matching algorithms are designed for the spatio-temporal point sequences and spatio-temporal fragment sequences.Firstly,a basic search matching algorithm is established on the basis of B + index tree.,The search matching algorithm based on linear index table is proposed by establishing linear index table.Then,the heuristic algorithm based on heuristic algorithm is proposed by referring to heuristic algorithm.Finally,The optimal search matching algorithm based on learning is proposed by establishing optimal strategy table.Each algorithm is improved and optimized on the basis of the previous algorithm.Secondly,the paper analyzes the feasibility and performance of the model.The paper proves that the model is feasible from the theoretical and experimental aspects.The results show that more than 98.88% of the overlapping degree between the mobile phone trajectorys is 0 and if five or more surveillance spatio-temporal fragments or electronic bayonet spatio-temporal points are obtained from the suspects,we can confirm the identity of suspects.The paper carries on the experiment by real data.The result shows that the search-matching algorithm proposed in this model can get the matching result in about 0.85 seconds by the given surveillance trajectory and in about 0.75 seconds by the given bayonet trajectory.Finally,the trajectory tracking model based on base station has a strong scalability,the paper expanded the model by Wi Fi trajectory and image trajectory as an example.In addition,Aided by the PGIS platform,the trajectory tracking model can provide an intelligent detection tool.