Dynamic differential positioning method based on map matching for mobile communication terminals

A mobile communication terminal, dynamic differential positioning technology, applied in the direction of location-based services, wireless communications, electrical components, etc.

Active Publication Date: 2017-02-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the current mobile positioning technology can basically meet the needs of the majority of users, there is still much room for improvement in terms of accuracy and security.

Method used

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  • Dynamic differential positioning method based on map matching for mobile communication terminals
  • Dynamic differential positioning method based on map matching for mobile communication terminals
  • Dynamic differential positioning method based on map matching for mobile communication terminals

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Embodiment Construction

[0037] The specific implementation of the present invention will be further described below in conjunction with accompanying drawings and examples, but the implementation and protection of the present invention are not limited thereto. If there are no specific details below, those skilled in the art can refer to the implementation of the prior art.

[0038] The principle analysis of this example to solve the problem.

[0039] 1) Select base station positioning

[0040] Obtain the information of nearby base stations through mobile phones, obtain the latitude and longitude of nearby base stations from the information of nearby base stations, and calculate the latitude and longitude of the current location according to the algorithm. There are several reasons why we choose the base station to obtain location information: one is that the number of base stations is large and the distribution is wide; the other is that the method for obtaining base station information is simple; Tu...

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Abstract

The invention discloses a dynamic differential positioning method based on map matching for mobile communication terminals. The method comprises the following steps of acquiring information of surrounding base stations; according to the acquired base station information, using a base station information database to find the latitude and longitude coordinates of surrounding base station points; calculating the latitude and longitude coordinates of a mobile communication terminal; according to the latitude and longitude coordinates of the mobile communication terminal, marking the position of the mobile communication terminal in a map, removing historical position coordinates which too much deviate from a fitting trajectory and fitting remaining historical positions to form a motion trajectory; contrasting the fitted trajectory with the direction angles and the distance differences of roads in the map, matching the closest street road and removing position points which deviate from the matched road much more on the motion trajectory; and drawing the standard path on the map and repeating the previous steps. The invention adopts the differential way to carry out the data fitting, makes the positioning more accurate, also reduces the cost of positioning, and effectively solves the problem of base station positioning and navigation being difficult.

Description

technical field [0001] The invention relates to the technical field of positioning of mobile communication terminals, in particular to a dynamic differential positioning method for mobile communication terminals based on map matching. Background technique [0002] There are two types of mobile positioning technologies, one is based on GPS positioning, and the other is based on the positioning of the base station of the mobile operating network. Nowadays, various technologies that require the use of positioning systems, such as mobile phone maps and car navigation, mostly use GPS-based positioning. But at the same time, a considerable number of users are unwilling to turn on the GPS and use the GPS satellite positioning system. The GPS function will sometimes share location information without the user's knowledge, causing the user's information to leak. In the case of potential safety hazards in GPS, using mobile phone base station positioning is a good alternative. In add...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W64/00G01C21/30
CPCG01C21/30H04W64/006H04W4/029
Inventor 官权升陈川旭周悦彭林杨宇轩薛妍
Owner SOUTH CHINA UNIV OF TECH
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