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Indoor positioning method and device based on wireless signal similarity

A wireless signal and indoor positioning technology, applied in the field of wireless positioning, can solve problems such as difficult positioning and achieve the effect of avoiding adverse effects

Active Publication Date: 2016-02-24
SAMSUNG ELECTRONICS CHINA R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This positioning method has certain requirements on the number of reference points, and it is difficult to achieve positioning when there are few reference points

Method used

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  • Indoor positioning method and device based on wireless signal similarity
  • Indoor positioning method and device based on wireless signal similarity
  • Indoor positioning method and device based on wireless signal similarity

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Experimental program
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Embodiment 1

[0037] In this embodiment, the wireless signal sending device is specifically an access point (AP, AccessPoint) device.

[0038] Such as figure 2 It is the implementation flowchart of this embodiment, including:

[0039] Step 201: Obtain the wireless signal at the current location, remove the invalid data in the wireless signal, keep the valid data, and obtain the AP identification (such as BSSID) and signal strength of each wireless signal at the current location. Here, invalid data refers to data with excessive noise.

[0040] Step 202: Judging whether it is the target entry stage, if yes, go to step 203; otherwise go to step 204.

[0041] Step 203: Record the AP identification and signal strength of each wireless signal at the current location into the wireless signal feature database of the target location, and use it as reference data for indoor positioning of other wireless signals later. End the current process.

[0042]Step 204: Obtain the AP identification and si...

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PUM

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Abstract

The invention provides an indoor positioning method and device based on wireless signal similarities. The indoor positioning method comprises the steps of acquiring transmitting equipment marks and signal intensity of all wireless signals of a current position and a target position, enhancement processing is carried out on wireless signals intensity, generating a vector X corresponding to the current position and a vector Y corresponding to the target position, adding components in the X and the Y respectively, then calculating cosine similarities, and obtaining a positioning relation between the current position and the target position. The indoor positioning method and device based on the wireless signal similarities can avoid adverse effects on positioning due to the fact that the number of reference points is too small.

Description

technical field [0001] The present invention relates to the technical field of wireless positioning, in particular to an indoor positioning method and device based on wireless signal similarity. Background technique [0002] Existing indoor wireless positioning methods require many reference points, and locate by finding the nearest k reference points. This positioning method has certain requirements on the number of reference points, and it is difficult to achieve positioning when there are few reference points. Contents of the invention [0003] The invention provides an indoor positioning method based on the similarity of wireless signals, which can avoid the adverse effect on positioning caused by too few reference points. [0004] The present invention also provides an indoor positioning device based on wireless signal similarity, which can avoid adverse effects on positioning caused by too few reference points. [0005] Technical scheme of the present invention is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/02
CPCG01S5/0284
Inventor 申立明程俊杰
Owner SAMSUNG ELECTRONICS CHINA R&D CENT