Indoor positioning method and positioning device based on multi-source information fusion

A multi-source information fusion and indoor positioning technology, which is applied in the field of indoor positioning methods and positioning devices based on multi-source information fusion, can solve the problems of easy occlusion, low signal strength, and easy interference, etc., to improve positioning accuracy, It is not easy to be interfered by the external environment, and the effect of high-precision indoor positioning

Active Publication Date: 2017-02-15
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most outdoor positioning technologies use satellite and base station signals for positioning. These signals have the disadvantages of low strength, easy to be blocked, and susceptible to interference. Once they enter the room, it is difficult to use these signals for positioning. The last mile" problem

Method used

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  • Indoor positioning method and positioning device based on multi-source information fusion
  • Indoor positioning method and positioning device based on multi-source information fusion
  • Indoor positioning method and positioning device based on multi-source information fusion

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Embodiment Construction

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0034] Before describing the indoor positioning method and positioning device based on multi-source information fusion according to the embodiment of the present invention, a brief example of the positioning method in the related art will be given below.

[0035]At present, indoor positioning technology has broad application prospects in many fields. For example, in life, indoor positioning technology can help us find parking spaces in parking lots, find stores or products we want to find in shopping malls, and meet people's soci...

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Abstract

The invention discloses an indoor positioning method and positioning device based on multi-source information fusion. The method comprises the following steps: acquiring information map information, dispersing the indoor map information as a plurality of uniform lattice points to obtain the latticed indoor map information, and establishing connectivity among the dispersed lattice points; acquiring pedestrian track plotting information obtained by a mobile terminal based on user walking so as to obtain change information with the probability on the plurality of uniform lattice points according to the indoor map information and the pedestrian track plotting information; and acquiring assistant positioning information to modify the probability on different lattice points, and then fusing the latticed indoor map information, the pedestrian track plotting information and the assistant positioning information through the Bayesian filtering to finish the indoor positioning. Through the adoption of the positioning method disclosed by the embodiment of the invention, the indoor map information, the pedestrian track plotting information and the assistant positioning information can be fused to realize the aim of high-precision indoor positioning; not only is the positioning precision improved, but also the positioning efficiency is improved; and the positioning is simple and easy to realize.

Description

technical field [0001] The invention relates to the technical field of position positioning, in particular to an indoor positioning method and positioning device based on multi-source information fusion. Background technique [0002] Since the emergence of GNSS (Global Navigation Satellite System, since the Global Navigation Satellite System), its convenient and fast ability to accurately locate has brought convenience and changes to people's lives. With the popularity of smart phones or devices equipped with GPS (Global Positioning System, Global Positioning System) functions, some LBS (Location Based Service, location-based services) such as positioning services and navigation services have emerged. However, most outdoor positioning technologies use satellite and base station signals for positioning. These signals have the disadvantages of low strength, easy to be blocked, and susceptible to interference. Once they enter the room, it is difficult to use these signals for p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W4/04
Inventor 沈渊戈锋
Owner TSINGHUA UNIV
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