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Positioning method and device

A positioning method and positioning identification technology, which are applied in the directions of measuring devices, two-dimensional position/channel control, vehicle position/route/altitude control, etc., and can solve the problem of low positioning accuracy of GPS positioning system

Inactive Publication Date: 2015-07-01
CHINA ACAD OF TELECOMM TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a positioning method and device to solve the positioning problem when the GPS positioning system cannot be used and the low positioning accuracy of the GPS positioning system

Method used

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Embodiment Construction

[0049] The technical solutions provided by the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0050] A positioning method provided by an embodiment of the present invention is as follows: figure 1 As shown, it specifically includes the following operations:

[0051] Step 100, identifying the positioning mark in the image acquired in real time.

[0052] In the embodiment of the present invention, the mobile terminal may be, but not limited to, an on-vehicle module, a navigation device, a smart phone, a palmtop computer, etc. on vehicles such as vehicles.

[0053] Preferably, the image acquired in real time can be a photo image, or a frame of video image in a video acquired in real time.

[0054] Preferably, the image is acquired by an image acquisition device on the mobile terminal. The positioning mark is set within the moving range of the mobile terminal so as to be acquired by the image acquisition d...

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Abstract

A positioning method and device. The method comprises: recognizing a positioning identifier in an image which is acquired in real time (100); according to a recognition result of the positioning identifier, determining a position of a mobile terminal relative to the positioning identifier (110); acquiring a geographical position of the positioning identifier (120); and according to the geographical position of the positioning identifier and the position of the mobile terminal relative to the positioning identifier, determining a current geographical position of the mobile terminal (130). When a GPS positioning system cannot be used, the mobile terminal can be positioned using the method. Since the positioning identifier is pre-set, an accurate position of the positioning identifier can be acquired, while an error of the position of the mobile terminal relative to the positioning identifier, which is obtained through calculation, is far less than a navigation deviation of the GPS positioning system. Therefore, the accuracy of the geographical position of the mobile terminal determined via the method is far higher than the accuracy of positioning by the GPS positioning system.

Description

technical field [0001] The present invention relates to the technical field of positioning, in particular to a positioning method and device. Background technique [0002] At present, the global positioning system (Global Positioning System, GPS) positioning system is mainly used for positioning. However, the positioning accuracy of the GPS positioning system is low, usually the horizontal positioning accuracy is 10m, so the lane cannot be distinguished. In traffic navigation, failure to differentiate lanes can be misleading. For example, the correct navigation route is to merge from the auxiliary road to the main road, but misjudgment of the main road and the auxiliary road leads to misleading. In applications that release vehicle safety information, if lanes cannot be distinguished, safety-related information such as collision warnings may be missed or mistakenly sent. [0003] In addition, in places with weak GPS signals such as tunnels and underground parking lots, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00
CPCG01C21/00G05D1/02G01C21/12G05D1/0234
Inventor 周海军刘刚邓猛
Owner CHINA ACAD OF TELECOMM TECH
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