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Fingerprint library establishment method and device based on WiFi (Wireless Fidelity) indoor positioning

An establishment method and indoor positioning technology, applied in electrical components, wireless communication, network planning, etc., can solve the problem of too few WiFi fingerprint samples affecting positioning accuracy, and achieve the effect of improving accuracy

Inactive Publication Date: 2017-08-22
PHICOMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the present invention provides a fingerprint database establishment method and device based on WiFi indoor positioning, which effectively solves the technical problem in the prior art that the positioning accuracy is affected by too few WiFi fingerprint samples

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  • Fingerprint library establishment method and device based on WiFi (Wireless Fidelity) indoor positioning
  • Fingerprint library establishment method and device based on WiFi (Wireless Fidelity) indoor positioning
  • Fingerprint library establishment method and device based on WiFi (Wireless Fidelity) indoor positioning

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Embodiment Construction

[0061] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.

[0062] Barometric pressure maps are widely used in meteorological research. By establishing a barometric pressure map, you can get the pressure value of any target location. We know that the corresponding pressure value is higher in places with higher latitudes, and the closer the distance to the wireless access point is. The RSS value is also larger; factors such as changes in temperature and humidity, and airflow movement will cause fluctuations in air pressure. Factors such as m...

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Abstract

The invention provides a fingerprint library establishment method and device based on WiFi (Wireless Fidelity) indoor positioning. The fingerprint library establishment method comprises the steps of S1, selecting a wireless access point of which fingerprint library is not established; S2, randomly sampling a plurality of sample points for the selected wireless access point in a target area; S3, establishing signal strength distribution models of the points according to Gaussian processes of the sample points and finishing establishing the fingerprint library of the wireless access point in the target area; and S4, judging whether the corresponding fingerprint libraries are established for all indoor wireless access points or not, if the corresponding fingerprint libraries are established for all indoor wireless access points, finishing establishing the fingerprint libraries in the target area, otherwise returning to the step S1. Continuous full-plane WiFi fingerprint distribution is obtained according to discrete WiFi fingerprint distribution, in particular, for the area not involved by a random sampling process, the area can be covered through the method, and the indoor WiFi positioning precision can be greatly improved.

Description

technical field [0001] The invention relates to the field of positioning technology, in particular to a method and device for establishing a fingerprint library. Background technique [0002] With the rapid development of mobile Internet technology, the demand for location-based services has become more and more extensive, and has penetrated into various aspects such as military affairs, commerce, and life. At present, for positioning, people most often use the Global Positioning System (Global Positioning System, GPS), which uses the signal time difference between multiple satellites and the user's GPS receiver to position the user, and the positioning range can cover the whole world, but the satellite signal It is easily blocked by various obstacles, that is, the positioning technology is not suitable for indoor or tall buildings, and other technical means are needed for indoor positioning. [0003] The indoor positioning technology based on WiFi (Wireless Fidelity, Wirel...

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Application Information

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IPC IPC(8): H04W16/22H04W64/00
CPCH04W16/225H04W64/006
Inventor 赵波
Owner PHICOMM (SHANGHAI) CO LTD