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Indoor accurate positioning method and system based on LANDMARC

A precise positioning and definition technology, applied in services based on location information, services based on specific environments, positioning, etc., can solve the problems of reference tag interference, limited positioning accuracy, large errors, etc., to reduce the impact of positioning accuracy. , The effect of improving positioning accuracy and low equipment cost

Active Publication Date: 2020-11-06
FUJIAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

This method reduces the average positioning error by repeatedly checking the calculated target labels, but does not optimize the selection of the reference labels, which will cause errors caused by repeated calibrations but cannot improve the reference labels.
[0004] In the existing technical solutions, although the reference labels can be selected through the k-neighborhood algorithm to avoid the introduction of distant reference labels, this method has When the position of the target label changes, there will be a situation where the error is too large
At the same time, because the distance between the selected reference tags is usually relatively short, there will be strong interference between the selected reference tags
Therefore, only the k-neighbor algorithm is used to select the reference label to locate the target label, and the positioning accuracy is limited.

Method used

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  • Indoor accurate positioning method and system based on LANDMARC
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  • Indoor accurate positioning method and system based on LANDMARC

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0050]It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0051] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinat...

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Abstract

The invention relates to an indoor accurate positioning method and system based on LANDMARC. The method comprises the following steps: firstly, solving a reference label number which enables a targetlabel to be positioned optimally through a reference label which is most adjacent to the target label, then calculating the coordinate of the target label through the reference label with the optimalreference label number, and finally correcting a positioning result. According to the invention, introduction of bad reference labels can be avoided, and the positioning precision can be improved.

Description

technical field [0001] The invention relates to the technical field of indoor positioning, in particular to a LANDMARC-based indoor precise positioning method and system. Background technique [0002] At present, there are many kinds of indoor positioning technologies, but the comprehensive positioning accuracy is not high enough, and the operating cost of the entire positioning system is relatively high. Indoor positioning based on LANDMARC has significant advantages. The LANDMARC indoor positioning method replaces expensive equipment by introducing cheap tags and has a strong ability to resist environmental interference. Therefore, it is particularly important to optimize the indoor positioning based on LANDMARC technology, which has become a hot research topic at home and abroad. [0003] "RFID Location Algorithm Based on Target Search and Repeat Calibration" published in 2018 introduced a method for optimizing the LANDMARC indoor positioning system. This method is to r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W4/33H04W4/021G01S5/02G01C21/20
CPCH04W4/023H04W4/33H04W4/021G01S5/02G01S5/021G01C21/206Y02D30/70
Inventor 张平均胡鹏军王小红罗玲刘洋
Owner FUJIAN UNIV OF TECH