Two-dimensional vehicle positioning method in tunnel environment and based on radio frequency identification

A tunnel environment, two-dimensional positioning technology, applied in the field of vehicle navigation and positioning, can solve the problems that cannot meet the requirements of urban traffic vehicle navigation and positioning

Inactive Publication Date: 2014-09-03
SOUTHEAST UNIV
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Problems solved by technology

[0007] To sum up, the existing navigation technologies, especially GPS-based navigation technologies, have various shortcomings in the tunnel environment where GPS signals are blocked, and cannot meet the requirements of urban traffic for vehicle navigation and positioning. Identification (RFID) technology has many advantages, and it can realize high reliability and accurate positioning of vehicles in the tunnel environment

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  • Two-dimensional vehicle positioning method in tunnel environment and based on radio frequency identification
  • Two-dimensional vehicle positioning method in tunnel environment and based on radio frequency identification
  • Two-dimensional vehicle positioning method in tunnel environment and based on radio frequency identification

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Embodiment Construction

[0040] Below in conjunction with implementation example and accompanying drawing of description, the present invention will be further specifically described in detail:

[0041] The present invention selects active radio frequency identification tags and radio frequency identification reader-writers, applies them in tunnel environments, and proposes a vehicle two-dimensional positioning method for tunnel environments, through active active radio frequency identification tags and radio frequency identification readers The identification information of the writer determines the range of the two-dimensional coordinates of the vehicle, and then uses a constrained optimization algorithm to determine the exact position of the vehicle, thereby solving the problem of positioning the vehicle in a tunnel environment where the GPS signal is blocked for a long time. The specific steps are as follows:

[0042] Step 1) For the usual tunnel environment, within the range of 50 to 100 meters, t...

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Abstract

The invention discloses a two-dimensional vehicle positioning method in a tunnel environment and based on radio frequency identification. A radio frequency identification (RFID) technology is adopted in the urban tunnel environment and combined with an RFID positioning algorithm and a constrained optimization algorithm to position a vehicle, so that accuracy of vehicle positioning is improved, and two-dimensional position information of the vehicle in the tunnel environment can be accurately estimated in real time. The two-dimensional vehicle positioning method has the remarkable advantages of being high in positioning speed and accuracy, good in real-time performance and the like.

Description

technical field [0001] The invention belongs to the field of vehicle navigation and positioning, and relates to a fast two-dimensional positioning method for vehicles facing a tunnel environment. Background technique [0002] With the continuous development and progress of various science and technology and application technology, urban transportation has gradually moved towards the road of intelligence and humanization, thus the concept of intelligent traffic system (Intelligent Traffic System, ITS) has emerged, which is the advanced Various technologies such as advanced information technology, data communication transmission technology, electronic control technology, sensor technology and computer processing technology are effectively integrated in the transportation system, so as to realize more accurate, real-time and efficient comprehensive management and control of the transportation system, and the maximum Maximize the realization of harmony and unity among people, ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/00
CPCG01S5/02
Inventor 宋翔高怀堃徐启敏李旭
Owner SOUTHEAST UNIV
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