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Indoor positioning method based on sparse signal fingerprint database

An indoor positioning and sparse signal technology, which is applied in the direction of location information-based services, electrical digital data processing, special data processing applications, etc., can solve the problems of heavy workload, time-consuming reference point acquisition, and high cost

Active Publication Date: 2016-06-01
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0012] The purpose of the present invention is to provide an indoor positioning method based on a sparse signal fingerprint database, which solves the technical problems of time-consuming reference point acquisition, heavy workload and high cost in the prior art

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  • Indoor positioning method based on sparse signal fingerprint database
  • Indoor positioning method based on sparse signal fingerprint database
  • Indoor positioning method based on sparse signal fingerprint database

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Embodiment Construction

[0049] The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

[0050] see figure 1 , the indoor positioning method based on the sparse signal fingerprint database provided by the present invention comprises the following steps:

[0051] Step S100: collect information fingerprints of all reference points, and construct a reference point fingerprint training database DB containing signal fingerprints tr ;

[0052] Step S200: Generate a large number of evenly distributed virtual reference points covering the entire area to be positioned, and construct a virtual database PD composed of virtual reference points vr ;

[0053] Step S300: Estimate virtual database PD based on local Gaussian process vr The wireless hotsp...

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Abstract

The invention provides an indoor positioning method based on a sparse signal fingerprint database. The positioning precision of the indoor positioning method based on a few reference points is improved by introducing a local Gaussian process and improving the existing KWNN (K Weighted Nearest Neighbor) algorithm.

Description

technical field [0001] The invention relates to the field of indoor positioning, in particular to an indoor positioning method based on a sparse signal fingerprint database. Background technique [0002] Determining the coordinates of a location anywhere in the room is important, and researchers have developed various algorithms for this problem. With the development of wireless network technology based on the 802.11 specification and the popularity of wireless networks and smart phones, indoor positioning methods based on wireless signal fingerprints have attracted extensive attention. [0003] Signal fingerprint location includes two steps: training and location. The training phase is mainly to create a signal fingerprint database, collect different hotspot signal strengths in different indoor locations, combine the location and corresponding signal strength information to form signal fingerprints, and save all signal fingerprints in the database. In the positioning stag...

Claims

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Application Information

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IPC IPC(8): H04W64/00H04W4/04G06F17/30
CPCG06F16/211H04W4/04H04W64/00
Inventor 王维平常强李群侯洪涛石泽森陈伟
Owner NAT UNIV OF DEFENSE TECH
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