Indoor positioning method based on Wi-Fi, Bluetooth and PDR integrated positioning

A technology that integrates positioning and indoor positioning. It is used in positioning, transmission systems, wireless communications, etc., and can solve problems such as complex indoor environments.
CN110320495APending Publication Date: 2019-10-11GUILIN UNIV OF ELECTRONIC TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
GUILIN UNIV OF ELECTRONIC TECH
Publication Date
2019-10-11

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Abstract

The invention discloses an indoor positioning method based on Wi-Fi, Bluetooth and PDR integrated positioning. The method comprises the steps that (1) a Wi-Fi environment is deployed in a to-be-positioned region, and a Wi-Fi offline fingerprint database is established by collecting Wi-Fi signal strength values RSSI of all sub-regions in the to-be-positioned region at an offline stage; (2) Wi-Fi signal RSSI values are collected at an online stage, and Wi-Fi positioning is realized through an improved weighted centroid localization algorithm; (3) Bluetooth equipment is deployed in the to-be-positioned region, Bluetooth RSSI values are collected, and Bluetooth positioning is realized through the improved weighted centroid localization algorithm; (4) Wi-Fi and Bluetooth integrated positioningis realized through average weighting; (5) a step model is utilized to match acceleration sensor results, and PDR positioning is performed; and (6) Wi-Fi, Bluetooth and PDR are integrated through a UKF algorithm to obtain a final positioning result. The positioning method is high in positioning precision, small in positioning error and good in effect.
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Description

technical field

[0001] The invention relates to the technical field of indoor positioning, in particular to an indoor positioning method based on Wi-Fi, Bluetooth and PDR fusion positioning. Background technique

[0002] With the rapid development of the location-based service industry, people's demand for location-based services has increased. At present, relatively mature GPS and Beidou positioning only support outdoor positioning. All aspects need to be improved. Mainstream indoor positioning technologies include Wi-Fi positioning, Bluetooth positioning, PDR positioning, ultra-wideband positioning, and geomagnetic positioning. Various positioning technologies have different advantages and disadvantages due to different positioning methods. Table 1 shows the advantages and disadvantages of several mainstream indoor positioning technologies. pros and cons.

[0003] Table 1 Comparison of different indoor positioning technologies

[0004]

[0005] Wi-Fi positioning main...

Claims

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