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An orientation-first location fingerprint indoor positioning method

An indoor positioning and fingerprint technology, applied in positioning, location information-based services, measuring devices, etc., can solve problems such as interference and signal interference, reduce complexity, improve accuracy and stability, and reduce system calculations Effect

Active Publication Date: 2019-11-12
HUNAN UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of signal interference in the current indoor positioning process, especially the signal interference caused by positioning users themselves during the positioning process, this invention proposes an indoor positioning solution with orientation priority and a corresponding positioning system, and adopts the layout method of optimizing the access point AP , reducing the complexity of engineering implementation, can significantly improve the accuracy and stability of indoor positioning

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  • An orientation-first location fingerprint indoor positioning method
  • An orientation-first location fingerprint indoor positioning method
  • An orientation-first location fingerprint indoor positioning method

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Embodiment Construction

[0026] The orientation-prioritized location fingerprint indoor positioning method proposed in the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0027] refer to figure 1 As shown in the positioning flow chart, the positioning process can be divided into two stages: offline and online. The offline stage includes: access point data collection, data preprocessing, and fingerprint database establishment. The online positioning stage includes querying the fingerprint database and algorithm positioning in addition to access point data collection and data preprocessing.

[0028] refer to figure 2 The steps shown include:

[0029] The user holds a terminal device and stands at a certain sampling point, facing away from access points APs 1 to n to form occlusions, and collects the direction sensor data of the terminal device and the signal strength data of n access points APs and stores them in the corresponding 1 ...

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Abstract

The invention discloses an azimuth preferred location fingerprint indoor positioning method, which comprises the steps of acquiring direction sensor data of terminal equipment and signal intensity data when a human body respectively shields 1-n access points (APs), and storing the acquired data into 1-n tables correspondingly in a database; distinguishing the orientation of a positioning user by using the data of a direction sensor in the terminal equipment; selecting a certain corresponding table in the n tables of the database according to the orientation of the user to act as a data table to be queried in current positioning; finding out an AP behind the positioning user, namely, an AP which is shielded most seriously, according to layout of the access points (APs); filtering the AP, and carrying out positioning in a mode of preferentially selecting front m APs which are minimum in fluctuation by using the remaining APs; and then deciding whether to carry out positioning by using the remaining (n-m-1) APs or not according to feedback information of the number of queried sampling points. The positioning method disclosed by the invention is not only obviously higher in positioning precision than that of a traditional positioning algorithm, but also significantly improved in positioning success, and is high in robustness.

Description

technical field [0001] The present invention relates to the technical field of indoor positioning based on WLAN, in particular to an indoor positioning method based on orientation priority location fingerprint. Background technique [0002] With the rise of the mobile Internet, people have new demands and more expectations for location-based services. Positioning services are not limited to outdoor navigation, and complex scenes such as large supermarkets, shopping malls, and airports also require corresponding location-based services. At the same time, with the rapid development of mobile terminals and wireless local area networks, the popularity of smart phones and the expansion of WiFi coverage have created necessary conditions for the current indoor positioning, so indoor positioning technology based on wireless local area network has become a research field in the field of location services in recent years. hotspot. [0003] At the same time, with the promotion of big...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/021H04W4/33H04W64/00G01S5/02
CPCG01S5/0252
Inventor 孙炜林安平唐宏伟殷虎
Owner HUNAN UNIV