Hybrid aerospace positioning method based on barometer and WiFi

A positioning method and barometer technology, applied in the directions of positioning, electrical components, nan, etc., can solve the problems of inapplicability, limited application, poor applicability, etc., to avoid time-consuming, labor-intensive, and on-site exploration.

Inactive Publication Date: 2017-06-13
HANGZHOU DIANZI UNIV
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Problems solved by technology

[0005] 1) Due to the complexity and barrier of the indoor environment, the GSM signal changes significantly indoors with the movement of the user, which will lead to a decrease in positioning accuracy. It can also be said that GSM is not a fine-grained signal, and its own accuracy is not high.
[0006] 2) In the data collection stage, users are required to participate in the calibration of the floors, and at the same time, each building needs to be calibrated, which greatly increases the user's use cost and affects the user's interactive experience, resulting in poor applicability
[0007] 3) Not suitabl

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  • Hybrid aerospace positioning method based on barometer and WiFi
  • Hybrid aerospace positioning method based on barometer and WiFi
  • Hybrid aerospace positioning method based on barometer and WiFi

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[0069] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0070] Such as Figure 4 As shown, a floor positioning method using a combination of barometer and WiFi, the specific steps are as follows:

[0071] Step 1. Collect the data of all users in the entire building by crowdsourcing. The data mainly includes the RSS vector and air pressure value of the user's location (if the mobile phone has a built-in air pressure sensor).

[0072] Step 2. The cloud service platform preprocesses the data uploaded by all users.

[0073] Step 3. The cloud service platform calibrates the preprocessed data to obtain standardized data.

[0074] Step 4. P...

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Abstract

The invention discloses a hybrid aerospace positioning method based on a barometer and WiFi. The method comprises the specific steps of S1, collecting data of all users of a whole building in a crowdsourcing mode, wherein the data mainly comprises RSS vectors and baro values of positions at which the users are located; S2, preprocessing data uploaded by all users through a cloud service platform; S3, calibrating the preprocessed data by the cod service platform, thereby obtaining standard data; S4, carrying out data analysis clustering on the calibrated data, thereby obtaining a Baro-RSS fingerprint map of the building; and S5, carrying out real-time positioning on the positions at which the users are located by the users themselves. According to the method, the floor positioning problem is solved through the hierarchical clustering analysis of the baro and the K-Means clustering of the WiFi, and the satisfactory positioning accuracy is achieved in a true environment.

Description

technical field [0001] The invention belongs to the technical field of floor positioning, and specifically relates to a hybrid floor positioning method based on a barometer and WiFi. Background technique [0002] In modern life, positioning can be divided into two areas: indoor positioning and outdoor positioning. The existing outdoor positioning is very mature, and there are outdoor positioning systems, such as the Global Positioning System (Global Position System), the Galileo Satellite Navigation System (Galileo Navigation System) and the Beidou-1 dual-star positioning system independently developed by China. As the most mature technology and the most stable positioning system at present, the GPS system uses satellite timing and ranging for navigation, and can provide high-precision continuous position, direction, Velocity, attitude and timing information. The system is composed of 24 satellites distributed on three orbital planes at 120 degrees to each other, of which ...

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Application Information

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IPC IPC(8): H04W4/04H04M1/725G01S5/02G01C5/06
CPCG01C5/06G01S5/0257H04M1/72403
Inventor 申兴发杨健陈岳燊张建辉
Owner HANGZHOU DIANZI UNIV
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