Stay point identification method and system based on high-frequency equidistant space-time trajectory data

A technology of spatio-temporal trajectory and identification method, applied in the field of stay point identification, can solve the problems of low accuracy, high time cost and money cost, and heavy psychological burden of the respondents, so as to avoid misjudgment, high accuracy of trajectory identification, The effect of ensuring coherence and accuracy

Inactive Publication Date: 2018-02-02
BEIJING URBAN CONSTR DESIGN & DEV GRP CO
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Problems solved by technology

The traditional method of obtaining travel behavior information is mainly in the form of questionnaire survey. Although this manual survey method has formed a complete set of survey procedures and norms at home and abroad, and has been used for many years, it still has some drawbacks. , such as the psychological burden of the respondents is heavy, the accuracy of the survey is not high, the cost of time and money is huge, etc.

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  • Stay point identification method and system based on high-frequency equidistant space-time trajectory data
  • Stay point identification method and system based on high-frequency equidistant space-time trajectory data
  • Stay point identification method and system based on high-frequency equidistant space-time trajectory data

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Embodiment

[0049] The present invention proposes a stay point recognition method based on high-frequency equidistant space-time trajectory data, the flow chart is as follows figure 1 shown, including the following steps:

[0050] Step 1. Acquisition and preprocessing of travel trajectory data

[0051] 1) Collection of travel trajectory data: Based on the travel trajectory APP, the mobile phone positioning data of each travel individual is collected, so as to obtain the location marker data with a sampling interval of Δt (Δt is finally determined to be 15s). The travel trajectory data content of each travel individual includes the ID information of the travel individual, the latitude and longitude information of the location marker, the date of data collection, and the time information of arriving at the location marker (the time information is accurate to seconds). Wherein, part of the data diagram used in the present invention is as follows figure 2 shown.

[0052] 2) Preprocessing of...

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Abstract

The invention relates to a stay point identification method and system based on high-frequency equidistant space-time trajectory data. The method includes the following steps: (1) collecting and preprocessing high-frequency equidistant space-time trajectory data; (2) traversing position mark points one by one, and calculating the density value within a buffer region range of certain radius relative to each position mark point; (3) drawing a density-time curve, and finding peak points; (4) traversing all the peak points one by one, finding a stay center point, and determining the total number of times of stay and the stay point positions of a travel individual; and (5) calculating the instantaneous speed of each position mark point, drawing a speed-time curve, and comparing the speed-time curve with the density-time curve to determine the arrival time, the departure time and the length of stay. The method and the system have high identification accuracy, will have great influence on thesubsequent analysis of travel mode, travel purpose, behavior prediction and so on when applied, and will provide an important theoretical basis for urban planning management.

Description

technical field [0001] The invention relates to a method and system for identifying a stop point, belonging to the technical field of position information processing, and in particular to a method and system for identifying a stop point based on high-frequency equidistant space-time trajectory data. Background technique [0002] Understanding people's movements is the basis for many applications and research. People's daily activities can be divided into static and sports according to whether the activities are carried out in a static local space. On the individual space-time trajectory, it shows two characteristics of staying and moving. The traditional method of obtaining travel behavior information is mainly in the form of questionnaire survey. Although this manual survey method has formed a complete set of survey procedures and norms at home and abroad, and has been used for many years, it still has some drawbacks. , such as the psychological burden of the respondents ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/26G06F17/30H04W4/02H04M1/725H04M1/72457
CPCG06F16/2465G06F16/9537G06Q50/26H04M1/72457
Inventor 刘剑锋李金海王静邓进杨冠华
Owner BEIJING URBAN CONSTR DESIGN & DEV GRP CO
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