Method for extracting real-time urban road traffic flow data based on mobile phone positioning data
A positioning data and road traffic technology, applied in location information-based services, road vehicle traffic control systems, traffic flow detection, etc., can solve problems such as poor real-time performance, low efficiency of map matching algorithms, and insufficient analysis and processing of actual data, etc. question
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[0056] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0057] The present invention utilizes the data collection card to collect the mobile phone positioning data on the GSM network of the main road sections in Beijing's third ring road and the main road sections in the suburbs. The original data includes information such as mobile phone identification numbers, time stamps, latitude and longitude coordinates, and event types. minute. The calculation program uses a fifteen-minute time window, updates the data every minute, processes the data stored in the fifteen-minute time window, and stores the calculation results in the database according to the section number.
[0058] Such as figure 1 The flow chart of data processing is shown, and the specific implementation steps are as follows:
[0059] Step 1. Mobile phone positioning data and map data preprocessing;
[0060] The preprocessing of mobile...
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