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Position-trajectory-based travel state splitting method

A traffic travel and state technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems that affect the traffic travel mode, and it is difficult to guarantee all the characteristics of the divided time period

Inactive Publication Date: 2015-04-08
BEIJING JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

Most studies on the segmentation of travel states mainly use fixed time intervals to segment travel states, but using fixed time intervals for the segmentation of travel states, it is difficult to ensure that the segmented time period contains all the characteristics of the transportation mode, thus affecting Identification of transportation modes

Method used

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  • Position-trajectory-based travel state splitting method
  • Position-trajectory-based travel state splitting method
  • Position-trajectory-based travel state splitting method

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Embodiment Construction

[0045] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings.

[0046] A traffic travel state segmentation method based on location trajectory, such as figure 1 shown, including:

[0047] Step 1. Utilize the positioning algorithm in the GPS positioning module of the smart phone to obtain the latitude and longitude coordinates of the position track point, the characteristics of time, and at the same time, manually identify the traffic travel mode in the traffic travel state time period;

[0048] Step 2, according to the longitude and latitude coordinates of the location track point obtained by the mobile phone, calculate the characteristics of the moving distance, instantaneous velocity, and instantaneous acceleration of the location track point;

[0049] Step 3, preprocessing the data of the position track points calculated in step 2;

[0050] Step 4, matching the data obtained in steps 1, 2, and 3 with the manually identif...

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Abstract

The invention belongs to the technical field of analysis over travel behaviors of residents, and particularly relates to a position-trajectory-based travel state splitting method, which comprises the following steps of performing GPS (Global Positioning System) positioning to obtain latitude and longitude coordinates of a position trajectory; calculating the distances of trajectory points, instantaneous speed and instantaneous acceleration; performing data cleaning and abnormal data processing; matching a manually identified travel manner; selecting different time intervals T, and splitting a travel state; performing characteristic extraction and sequential storage; performing Euclidean-distance-based similarity measurement on adjacent segments by taking characteristics of the travel segments as characteristic vectors, determining a proper time interval, and determining splitting points to realize the splitting of the travel state according to distance similarity measurement. According to the method, key points of the travel state can be determined more accurately, and the travel state can further be better split; compared with a conventional fixed time period and key point travel state splitting method, the method is more objective and reliable.

Description

technical field [0001] The invention belongs to the technical field of traffic travel behavior analysis of residents, and in particular relates to a traffic travel state segmentation method based on a location track. Background technique [0002] With the acceleration of my country's social and economic development and urbanization process, traffic congestion, traffic accidents, and traffic environment problems have become common "urban diseases" in my country's cities. Among them, the problem of urban traffic congestion is not just a simple technical problem, it has become a problem that every urban resident is constantly concerned about, and is gradually transforming into a social problem. In order to solve the problem of urban traffic congestion, researchers have proposed different solutions. Among them, scientific traffic planning and scheduling are considered by most scholars to be an effective means to solve the problem of urban traffic congestion. Mastery of travel b...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/29
Inventor 董宏辉贾利民秦勇沈云武明超丁晓青单庆超刘锴
Owner BEIJING JIAOTONG UNIV
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