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Method and apparatus for acquiring a multi-mode positioning fingerprint database

A multi-mode positioning and database technology, applied in the field of wireless positioning, can solve the problems of sudden increase in the amount of positioning fingerprint collection, high operation and maintenance costs, and difficulty in determining the grid division granularity, achieving low operation and maintenance costs and high precision

Active Publication Date: 2017-12-01
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0007] Therefore, in the case of non-uniform coverage of the actual multi-mode signal, the method of uniformly quantizing the positioning area has the following defects: First, it is difficult to determine the granularity of the grid division
If the grid is divided according to the coarser granularity, there will be coverage holes of non-cellular signals in the grid; if the grid is divided according to the finer granularity, it will lead to a sudden increase in the collection of positioning fingerprints, which will make the deployment of indoor positioning systems more difficult. Complex and time-consuming, high operation and maintenance costs; second, the quantization noise of the positioning grid is not proportional to the signal coverage density of the grid

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[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. 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.

[0027] Multi-mode fingerprint indoor positioning technology is roughly divided into two stages: offline sampling stage and online positioning stage (or real-time positioning stage). The method and device for acquiring a multi-mode positioning fingerprint database provided by the embodiments of the present invention are aimed at the offline sampling stage.

[0028] The ...

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Abstract

The invention provides a method and apparatus for acquiring a multi-mode positioning fingerprint database. The method includes the steps of S1, dividing a positioning area by using a first granularity to acquire initial grids; and S2, performing, according to a determination result of whether non-cellular access points exist in the initial grids, corresponding processing on the initial grids to obtain second-level grids. The corresponding operation is performed by determining whether the non-cellular access points exist in the grids, the grid division granularity can be dynamically adjusted according to the signal density in an area to be positioned so that the quantization noise of the positioning grids is in proportion to the signal coverage density of the grids, and the multi-mode positioning fingerprint database is high in accuracy and low in cost of operation and maintenance at the same time.

Description

technical field [0001] The invention relates to the technical field of wireless positioning, in particular to a method and a device for acquiring a multi-mode positioning fingerprint database. Background technique [0002] Indoor positioning technology refers to the positioning technology that obtains the location of people or objects when they are in the indoor environment. Due to the popularity of the Global Positioning System (GPS, Global Positioning System), the outdoor positioning technology is very mature. However, the GPS signal received in the indoor environment is very weak, or even unreceived. Therefore, in the indoor environment, a new positioning technology needs to be adopted. [0003] Indoor positioning technology is generally divided into three categories: geometric positioning method, nearby positioning method and location fingerprinting method. Among them, the location fingerprint method abstracts, formalizes and discretizes the positioning environment, an...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W64/00H04W88/08G06K9/00G06F17/30
CPCH04B17/318H04W4/021H04W64/00H04W88/08G06F16/284G06F16/29G06V40/12
Inventor 田辉林尚静范绍帅黄治乾李雅铷
Owner BEIJING UNIV OF POSTS & TELECOMM
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