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A method for indoor location tracking

A technology for indoor positioning and positioning time, applied to services based on location information, services based on specific environments, etc., can solve problems such as errors and fluctuations, and achieve the effect of improving accuracy

Inactive Publication Date: 2018-02-27
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, for the same indoor location, the signal strength of the same WIFI access point is not constant over time, but fluctuates to a certain extent. large error

Method used

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  • A method for indoor location tracking
  • A method for indoor location tracking
  • A method for indoor location tracking

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] The embodiment of the present invention discloses an indoor positioning and tracking method, which is applied to a smart mobile terminal, and the smart mobile terminal includes a WIFI signal receiving module, an acceleration sensor and a magnetometer; figure 1 It is a flow chart of the indoor positioning tracking method in this embodiment. It should be noted that there is no chronological order between step S101 and step S102. The above-mentioned indoor...

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Abstract

The application discloses an indoor positioning tracking method. The method comprises the following steps: acquiring WIFI fingerprint at the current positioning moment; computing the first position estimation position of a user at the current positioning moment; collecting acceleration information and direction information in the current target movement time slot; computing the second position estimation information of the user at the current positioning moment; using the first position estimation information and the second position estimation information to multiply respective weight coefficient, and then adding to obtain position of the user at the current positioning moment. Therefore, the position information of the user is obtained through the adding of the first position estimation information and the second position estimation information after different weight coefficients are respectively exerted on the first position estimation information obtained through the WIFI fingerprint and the second position estimation information obtained through the acceleration information and the direction information, the first position estimation information obtained through the WIFI fingerprint is calibrated through the adoption of the acceleration information and the direction information, thereby improving the precision of the finally obtained user position information.

Description

technical field [0001] The invention relates to the technical field of indoor positioning, in particular to an indoor positioning tracking method. Background technique [0002] At present, with the development of wireless local area networks, one or more WIFI access points have been deployed inside many buildings. On this basis, WIFI-based indoor positioning technology has also been developed to a certain extent. [0003] However, for the same indoor location, the signal strength of the same WIFI access point is not constant over time, but fluctuates to a certain extent. large error. [0004] From the above, it can be seen that how to improve the accuracy of the indoor positioning and tracking process is an urgent problem to be solved. Contents of the invention [0005] In view of this, the object of the present invention is to provide an indoor positioning tracking method, which improves the accuracy of the indoor positioning tracking process. The specific plan is as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/021H04W4/33
CPCH04W4/043
Inventor 王兴旺魏晓辉
Owner JILIN UNIV