Research On Person Trajectory Analysis Based On Location Information Of Mobile Phone

In order to provide better services and determine how to charge,various applications in smart phones collect a lot of user location information.The huge amount of location data provides a rich source of data for us to study the trajectory of travel.These location information constitute a huge value database.These positions are not arbitrary choices of the user,but purposeful choices.They are specific expressions of the user's daily behavior.This is the detection value of track information,such as time and space.As a criminal carrier and tool,mobile phone has appeared in more and more cases of investigation,and using mobile phone location information has more and more become the key of case breakthrough.Longitude and latitude correspond to spatial positions,and time and space constitute the basic elements of the suspect's trajectory.They are two essential elements for investigators to grasp and analyze the occurrence of cases.Based on this background,through the use of correlation,prediction,statistics,clustering and other analysis methods,combined with police investigation pre-knowledge to conduct character trajectory analysis,technology research,mining and analysis of suspects 'life patterns,behavior characteristics and other information,which can expand and enrich the existing investigation,handling methods and means to better serve the public security organs!This article uses the mobile phone location data(time,longitude,Latitude)obtained by the internal public security system and mobile phone forensics software,format editing through UE geographic information editing software,and using open source maps to display the road network.Visualize the otherwise boring data and translate it into easy-tounderstand semantic language to better analyze and understand the suspect's activities.Through data segmentation and deep excavation,we can obtain information about important places of residence,distances from home,crime hotspots and other directions of stay and travel,in addition with suspicious travel times,travel distance predictions,and travel patterns.Build bridges between cases that have been committed and unknown crimes,and support the corresponding decision deployment,including police deployment,crime prevention,community management and long-term crime response strategies,etc..This is of great significance for cracking down on criminals,safeguarding social stability and citizens 'rights and interests,and guiding public security organs to pay attention to the collection of information by mobile phone physical evidence.It provides an important theoretical basis for new ideas for police investigation.The police can also allocate police resources more scientifically according to suspicious space and time areas,plan patrols programs and identify the targets to be prevented or controlled,and improve the public security capabilities to early warning and control.