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4D endogenous safety indoor positioning method based on intelligent metasurface and positioning system thereof

A positioning method and metasurface technology, which can be applied to services based on specific environments, scattering and propagation systems, electrical components, etc., can solve the problems of inability to take into account positioning accuracy, reference node layout for environmental changes, information security, etc., to improve accuracy and safety. Safety, high-precision indoor positioning, the effect of increasing flexibility

Pending Publication Date: 2022-04-29
CHINA ELECTRONICS TECH GRP NO 7 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problems of positioning accuracy, environmental changes, reference node layout, and information security in the above existing technologies, the present invention provides a 4D endogenous safe indoor positioning method and its positioning system based on intelligent metasurfaces, which can greatly reduce the Influenced by indoor environment changes, it has the ability to continuously and accurately complete indoor positioning

Method used

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  • 4D endogenous safety indoor positioning method based on intelligent metasurface and positioning system thereof
  • 4D endogenous safety indoor positioning method based on intelligent metasurface and positioning system thereof
  • 4D endogenous safety indoor positioning method based on intelligent metasurface and positioning system thereof

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Embodiment 1

[0051] Such as figure 1 Shown, a kind of 4D endogenous safety indoor localization method based on intelligent metasurface, described method comprises as follows:

[0052] The wireless positioning signal is emitted by the positioning device, and the wireless positioning signal is reflected by using the reconfigurable characteristics of the electromagnetic environment of the smart metasurface, and the reflection is multiple spatial beam signals to scan the indoor three-dimensional space;

[0053]Then the positioned terminal receives the spatial beam signal, and transmits the biometric modulation of the positioned terminal in the reflected positioning signal by means of backscattering; the smart metasurface analyzes and processes the received reflected positioning signal, In this way, the dimension of spatial positioning information is expanded to realize indoor safe positioning.

[0054] In a specific example, such as figure 2 As shown, the intelligent metasurface is an indoo...

Embodiment 2

[0079] Such as figure 1 Shown, a kind of 4D endogenous safety indoor localization method based on intelligent metasurface, described method comprises as follows:

[0080] The wireless positioning signal is emitted by the positioning device, and the wireless positioning signal is reflected by using the reconfigurable characteristics of the electromagnetic environment of the smart metasurface, and the reflection is multiple spatial beam signals to scan the indoor three-dimensional space;

[0081] Then the positioned terminal receives the spatial beam signal, and transmits the biometric modulation of the positioned terminal in the reflected positioning signal by means of backscattering; the smart metasurface analyzes and processes the received reflected positioning signal, In this way, the dimension of spatial positioning information is expanded to realize indoor safe positioning.

[0082] In a specific example, such as figure 2 As shown, the intelligent metasurface is an indo...

Embodiment 3

[0112] A positioning system based on an intelligent metasurface, the positioning system comprising

[0113] A positioning device for transmitting wireless positioning signals;

[0114] The smart metasurface is used to reflect wireless positioning signals into multiple spatial beam signals, and analyze and process the reflected positioning signals;

[0115] The positioned terminal is used for receiving the spatial beam signal, and modulating the biometric feature of the positioned terminal in the reflected positioning signal for transmission.

[0116] In a specific example, such as figure 2 As shown, the intelligent metasurface is an indoor electromagnetic environment reconstruction device, and the intelligent metasurface includes a large-scale device array, an array control board, and several reflective device units are arranged on the large-scale device array;

[0117] The array control board is used to control the working state of each reflective device unit, so as to dyn...

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Abstract

The invention discloses a 4D endogenous safety indoor positioning method and system based on an intelligent metasurface, and the method comprises the following steps: transmitting a wireless positioning signal through positioning equipment, reflecting the wireless positioning signal through the electromagnetic environment reconfigurable characteristic of the intelligent metasurface, and reflecting the wireless positioning signal into a plurality of space beam signals, an indoor three-dimensional space is scanned; then, the positioned terminal receives the space beam signal, and biological characteristics of the positioned terminal are modulated in a reflection positioning signal to be transmitted in a backscattering mode; and the intelligent metasurface analyzes and processes the received reflection positioning signal, so that the spatial positioning information dimension is expanded, and indoor safe positioning is realized. Indoor electromagnetic environment reconstruction is realized based on the intelligent metasurface, limitation of indoor complex physical and electromagnetic environments is overcome, multi-stream parallel space scanning is supported through the multi-beam control capability of the intelligent metasurface, and high-precision indoor safe positioning is realized.

Description

technical field [0001] The present invention relates to the technical field of indoor positioning, and more specifically, to a 4D endogenous safe indoor positioning method based on an intelligent metasurface and a positioning system thereof. Background technique [0002] Thanks to the rapid development of metamaterial technology in recent years, a passive array composed of a large number of metamaterial units - reconfigurable intelligent surface (RIS) has been proposed, which can flexibly control wireless electromagnetic waves with low power consumption and low cost, greatly Improve the received signal quality. RIS breaks through the uncontrollable characteristics of the wireless electromagnetic environment, making the communication electromagnetic environment "smart" and "controllable", and constructs an effective interface between the electromagnetic world and the information world. [0003] GPS has become the most common reference system in almost all positioning and nav...

Claims

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Application Information

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IPC IPC(8): H04W64/00H04B7/22H04W4/33
CPCH04W64/003H04B7/22H04W4/33Y02D30/70
Inventor 刘铭桂振文谢伟坤
Owner CHINA ELECTRONICS TECH GRP NO 7 RES INST
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