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Positioning method and device, electronic equipment and readable storage medium

A positioning method and technology of position coordinates, which are used in measurement devices, electrical components, radio wave measurement systems, etc., can solve the problems of large data noise, long positioning time, and low positioning accuracy of fingerprint positioning algorithms.

Active Publication Date: 2018-11-02
BEIJING UNIV OF POSTS & TELECOMM
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large data noise of the fingerprint database, the positioning accuracy of the AdaBoost fingerprint positioning algorithm is low
In addition, if the AdaBoost fingerprint positioning algorithm obtains a better strong classifier, more classifiers need to be constructed, so the positioning time is longer

Method used

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  • Positioning method and device, electronic equipment and readable storage medium
  • Positioning method and device, electronic equipment and readable storage medium
  • Positioning method and device, electronic equipment and readable storage medium

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Embodiment Construction

[0089] 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, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0090] In order to solve the problems of low positioning accuracy and long positioning time of the AdaBoost fingerprint positioning algorithm, embodiments of the present invention provide a positioning method, device, electronic equipment and readable storage medium to improve positioning accuracy and shorten positioning time. The embodiment of the present invention is based on the GBDT (Gradient Boosting Decison Tree) algorithm. The GBDT algorithm belongs to t...

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Abstract

An embodiment of the invention provides a positioning method, a positioning device, electronic equipment and a readable storage medium, which are used in the technical field of wireless positioning. The positioning method comprises the steps of: updating position coordinates corresponding to signal intensity vectors in a fingerprint database according to the pre-established fingerprint database and a loss function; acquiring decision trees according to the signal intensity vectors and the position coordinates corresponding to the signal intensity vectors by adopting a least square regression tree generation algorithm, and updating a boosting tree to be a sum of the boosting tree and the decision trees, wherein an initial value of the boosting tree is 0; updating the position coordinates corresponding to the signal intensity vectors according to the boosting tree and the signal intensity vectors; returning to execute the step of generating the decision trees and updating the boosting tree till a number of the decision trees reaches a preset threshold value; and inputting the acquired and actually measured signal intensity vectors into the boosting tree when performing positioning, so as to obtain position coordinates corresponding to the actually measured signal intensity vectors. The positioning method the positioning device, the electronic equipment and the readable storage medium can improve the positioning precision, and shorten the positioning time.

Description

technical field [0001] The invention relates to the technical field of wireless positioning, in particular to a positioning method, device, electronic equipment and a readable storage medium. Background technique [0002] In recent years, the development of smart devices such as smartphones and tablet computers has played a vital role in the development of LBS (Location Based Service, location-based services), Internet of Things applications and other fields. According to a 2013 survey by the Pew Research Center, about three-quarters (74%) of smartphone users frequently use LBS. Indoor location information plays an increasingly important role in people's daily life, bringing great convenience to people's life and improving people's quality of life. At present, GNSS (Global Navigation Satellite System, global satellite navigation system) is widely used in outdoor environments, but because GNSS positioning signals are easily blocked by buildings, etc., and are susceptible to ...

Claims

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Application Information

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IPC IPC(8): G01S11/06H04W64/00
CPCG01S11/06H04W64/00
Inventor 邓中亮刘延旭胡恩文尹露唐诗浩朱棣
Owner BEIJING UNIV OF POSTS & TELECOMM
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