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Wifi-based location fingerprint positioning method

A fingerprint positioning and fingerprint technology, applied in measuring devices, nan, instruments, etc., can solve the problems of low accuracy of fingerprint database information and low online matching accuracy.

Inactive Publication Date: 2016-07-20
XIAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a location fingerprint positioning method based on wifi, which solves the problem of low accuracy of fingerprint database information and low online matching precision existing in the prior art

Method used

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  • Wifi-based location fingerprint positioning method

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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] The present invention is a kind of location fingerprint positioning method based on wifi, and the process is as follows figure 1 As shown, the specific steps are as follows:

[0045] Step 1: Preparation process: deploy wireless AP (AccessPoint, access point) and select and mark the reference point

[0046] Deploy n wireless APs throughout the area to be tested j , j=1, 2,..., n, and then select and mark m reference points in the entire area to be tested, so as to prepare for subsequent fingerprint collection of reference point positions.

[0047] Step 2: The establishment of the fingerprint library, the process is as follows figure 2 As shown, the collection of data and the use of filtering technology to complete the establishment of the fingerprint database

[0048] Step 2.1: Collect multiple wifi signals in different directions ...

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Abstract

The invention discloses a wifi-based location fingerprint positioning method. The method particularly comprises the following steps: 1, during a preparation process, wireless APs are deployed and reference points are selected and marked; 2, a fingerprint database is built, and data are acquired and a filtering technology is adopted to complete building of the fingerprint database; and 3, online matching is carried out, and a dynamic joint WKNN algorithm is adopted for indoor positioning. According to the wifi-based location fingerprint positioning method, a new data acquisition mode and the filtering technology are adopted for completing building of the fingerprint database, the dynamic joint WKNN algorithm is combined for indoor positioning, the fingerprint database information accuracy and the online matching precision are improved, and stable positioning is realized.

Description

technical field [0001] The invention belongs to the technical field of indoor positioning, and in particular relates to a location fingerprint positioning method based on wifi. Background technique [0002] With the rapid development of the mobile Internet and the wide application of pervasive computing technology, many public and commercial services have gradually increased the demand for location information of mobile users, such as tracking and monitoring of severe patients in the medical industry, anti-theft of babies in delivery rooms; product positioning when shopping in shopping malls , Collection of customer consumption habits; route navigation during travel, real-time location query, etc. The development of satellite-based outdoor technology has been very mature, but in the indoor environment, due to the interference of buildings and other obstacles, the GPS positioning accuracy is reduced or even impossible to locate. Outdoor location-related technologies can no lo...

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Application Information

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IPC IPC(8): H04W64/00H04W4/04G01S11/06
CPCH04W64/00G01S11/06
Inventor 缪亚林张洁郝璐军赵立怡仪孝展姬田田
Owner XIAN UNIV OF TECH
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