Indoor positioning method adopting multichannel vector fitting

A vector matching, indoor positioning technology, applied in positioning, measuring devices, radio wave measuring systems, etc., to achieve the effect of high-precision positioning

Inactive Publication Date: 2014-04-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to research and design a kind of SSD-based multi-channel vector matching method based on the defects in the indoor positioning system utilizing the signal characteristic of RSS, and use the sample RSS database to establish a multi-channel SSD database, so as to overcome the differences in indoor positioning environments and The influence of the signal source transmitting antenna difference on real-time positioning, so as to achieve real-time and high-precision positioning of the signal source of the positioning site

Method used

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  • Indoor positioning method adopting multichannel vector fitting
  • Indoor positioning method adopting multichannel vector fitting
  • Indoor positioning method adopting multichannel vector fitting

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Experimental program
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Embodiment Construction

[0021] 1. Experimental site layout: training point and monitor position setting

[0022] In a 20.4m×10.8m laboratory, as attached figure 2 As shown, 400 grid points are set up in the middle area of ​​the laboratory. For the convenience of explanation, the position coordinates of the four grid points at the end points of the 400 grid points are given (the units are meters), which are (2.4, 0.3), (17.4, 0.3), (17.4, 9.9), (2.4, 9.9). Between the grid points, the left, right, up and down are all 0.6 meters apart, and their position coordinates can be deduced by analogy. The coordinates of the eight monitors are RN1 (0, 10.2), RN2 (9.9, 10.2), RN3 (19.8, 10.2), RN4 (19.8, 0), RN5 (9.9, 0), RN6 (0, 0), RN7 (6.15, 5.1), RN8 (13.65, 5.1).

[0023] 2. Set up SSD database

[0024] 2-1. Establish RSS vector database

[0025] For the convenience of explanation, a grid point is taken as an example here. Place the signal source at the i-th grid point (2.4, 0.3), then the signal sour...

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Abstract

The invention discloses an indoor positioning method adopting multichannel vector fitting. The method comprises the following steps: before establishing a database, setting a positioning network (lattice position distribution) and a signal monitor position in a positioning area as required, establishing an RSS (Received Signal Strength) database including a signal strength database and a position information database by using RSS data acquired from each signal channel and different positions by a plurality of signal monitors, and establishing an SSD (Signal Strength Difference) database by using the RSS database; at a real-time indoor positioning stage, optionally selecting a point (target) to be positioned from the positioning area, monitoring the RSS data of the point, calculating target SSD data by using these RSS data, matching the target SSD data with a comprehensive SSD database, picking up most-matched SSD data in the database, and determining a target position. The indoor positioning method has the effect of accurately positioning signal sources in a positioning field in real time.

Description

technical field [0001] The invention belongs to a method for locating a signal source of indoor wireless propagation, in particular to a method for indoor locating a signal source target by using a multi-channel vector matching method based on an SSD (SignalStrength Difference) database. Background technique [0002] With the rapid development of modern communication technology and wireless network, people's demand for indoor positioning and navigation is increasing, especially in complex indoor environments, such as hospitals, airport halls, exhibition halls, warehouses, supermarkets, libraries, underground parking lots, In environments such as mines, indoor positioning technology shows very broad development prospects and commercial application value. Chinese patent 201010028128 "An Indoor Positioning Method Using Single Station and Multiple Channels", that is, a positioning method using RSS (Received Signal Strength) matching. This method first establishes the RSS databa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/02
CPCG01S5/02
Inventor 郭贤生储磊李葆仓张妍卢书洲
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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