WiFi-based path loss positioning method and system

A technology of positioning system and positioning method, applied in the field of communication, to achieve the effect of reducing positioning error, reducing hardware investment and reducing cost

Inactive Publication Date: 2016-12-07
BLUEDON INFORMATION SECURITY TECH CO LTD
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  • Abstract
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Problems solved by technology

(2) Positioning method independent of distance
[0005] With the advancement of science and technology, people's demand for high-precision po

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  • WiFi-based path loss positioning method and system
  • WiFi-based path loss positioning method and system
  • WiFi-based path loss positioning method and system

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[0027] 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 of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0029] Embodiments of the present invention provide a WiFi-based path loss positioning method and system, including two subsystems: a front-end AP subsystem and a background positioning subsystem, wherein the front-end AP subsystem can use a common wireless router on the market. It is mainly used to collect RSSI data in the induct...

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Abstract

The invention discloses a WiFi-based path loss positioning method and system. The method comprises the following steps of: initiation of a positioning system: acquiring RSSI numerical values of different sites in an induction field and distances from a corresponding mobile terminals to a front-end AP by the system, and calculating a corresponding positioning parameter <lambda>; data acquisition of the positioning system: receiving mobile terminal RSSI acquired by the front-end AP by a data acquisition module, and transmitting the mobile terminal RSSI to a positioning analysis module; positioning analysis of the positioning system: calculating geographic position information of the current mobile terminal by the positioning system according to a formula; data persistence of the positioning system: persistently storing the analyzed geographic position information of the mobile terminal to a database by the positioning system; and error correction of the positioning system: deleting the current positioning parameter <lambda> by the positioning system, re-acquiring mobile terminal sample data in the induction field, and calculating a new positioning parameter <lambda>.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular, to a WiFi-based path loss positioning method and system. Background technique [0002] The GPS-based positioning technology is greatly affected by the weather and the current building environment. The wireless cellular network-based positioning technology has a relatively large signal fading in an environment blocked by obstacles, making it difficult to achieve high-precision positioning. Most of the existing high-precision positioning functions are realized by using indoor positioning technology based on wireless sensor networks. The common positioning systems on the market need to add additional special equipment, and there are common problems of complex maintenance, high hardware cost, and small positioning range. . [0003] WiFi-based positioning technology can work indoors and outdoors at the same time, providing conditions for all-round coverage of the site env...

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Application Information

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IPC IPC(8): H04W64/00G01S11/06
CPCH04W64/00G01S11/06
Inventor 杨育斌沈金伟柯宗贵聂晶邓启润
Owner BLUEDON INFORMATION SECURITY TECH CO LTD
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