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A positioning method and system based on an intelligent reflective surface

The technology of a positioning system and positioning method, which is applied in the field of positioning methods and systems based on intelligent reflective surfaces, can solve the problems of inaccurate positioning, blocking the positioning sensor and the line-of-sight of the source to be positioned, and inaccurate positioning results, so as to improve the accuracy , the effect of eliminating errors

Active Publication Date: 2021-04-16
GUANGDONG COMM & NETWORKS INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In scenes rich in scatterers, such as urban scenes with dense buildings or shopping malls with dense traffic, due to the obstruction of the environment, non-line-of-sight (non-line-of-sight) will appear between the positioning sensor (network) and the signal source to be located. -of-sight, NLoS), that is, the positioning source and the sensor will be blocked by the environment, and at the same time, the complex environment will generate random stray multipath signals, and the impact of the two will lead to inaccurate positioning results
[0003] In the current positioning sensor network, IRS (Intelligent reflective surface, intelligent reflective surface) is used to locate the signal source, but there is also a line-of-sight (LOS) distance between the positioning sensor and the source to be located due to environmental obstruction. ) problem, and due to the uncontrollable random multipath caused by the scatterers in the environment, the positioning is inaccurate

Method used

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  • A positioning method and system based on an intelligent reflective surface
  • A positioning method and system based on an intelligent reflective surface
  • A positioning method and system based on an intelligent reflective surface

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0026] see figure 1 , figure 1 It is a schematic flowchart of a positioning method based on an intelligent reflective surface disclosed in an embodiment of the present invention. Wherein, the positioning based on the intelligent reflective surface can be applied in a positioning system, the system includes multiple positioning sensors, multiple intelligent reflective surface arrays and a channel emulator, for the application system of the positioning method based on the intelligent reflective surface, the embodiment of the present invention No restrictions. Such as figure 1 As shown, the positioning method based on the intelligent reflective surface may include the following operations:

[0027] 101. Obtain digital information about the positioning environment.

[0028] Wherein, the positioning environment digital information includes: a digital map used to describe the environment information, the position of each positioning sensor and the position of each intelligent re...

Embodiment 2

[0044] see Figure 4 , Figure 4 It is a schematic diagram of a positioning system based on an intelligent reflective surface disclosed in an embodiment of the present invention. Such as Figure 4 As shown, the positioning system based on intelligent reflective surfaces may include:

[0045] The information acquisition module 1 is used to acquire the digital information of the positioning environment. Wherein, the positioning environment digital information includes: a digital map used to describe the environment information, the position of each positioning sensor and the position of each intelligent reflective surface array. The way to obtain the digital map can be specifically implemented as, using laser radar to scan the actual environment building to obtain point cloud data, and the point cloud data is processed to obtain a digital map. In other implementation manners, the required relevant actual environment information may also be downloaded from an open source map ...

Embodiment 3

[0053] see Figure 5 , Figure 5 It is a structural schematic diagram of a positioning interaction device based on an intelligent reflective surface disclosed in an embodiment of the present invention. in, Figure 5 The described positioning device based on the intelligent reflecting surface can be applied in a positioning system, and the embodiment of the present invention does not limit the application system of the positioning interaction device based on the intelligent reflecting surface. Such as Figure 5 As shown, the device may include:

[0054] A memory 601 storing executable program codes;

[0055] a processor 602 coupled to the memory 601;

[0056]The processor 602 invokes the executable program code stored in the memory 601 to execute the positioning method based on the smart reflective surface described in the first embodiment.

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Abstract

The invention discloses a positioning method based on an intelligent reflective surface. The method includes acquiring positioning environment digital information, using a positioning sensor to perform first positioning on a signal source to generate first positioning information; using a channel emulator and positioning environment digital information, Judging whether there is a line-of-sight distance between the first positioning position of the signal source and the smart reflective array; First locate the position, and turn on the array of intelligent reflective surfaces; perform second positioning on the signal source according to the multipath propagation of multiple intelligent reflective surfaces into the positioning sensor to generate second positioning information; determine the first positioning information and the second positioning information. Whether the error distance between the two pieces of positioning information is smaller than a preset accuracy value, if the error distance is smaller than the preset accuracy value, then determining the second positioning information as accurate positioning position information. The method disclosed by the invention can improve the positioning accuracy.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a positioning method and system based on an intelligent reflecting surface. Background technique [0002] In scenes rich in scatterers, such as urban scenes with dense buildings or shopping malls with dense traffic, due to the obstruction of the environment, non-line-of-sight (non-line-of-sight) will appear between the positioning sensor (network) and the signal source to be located. -of-sight, NLoS), that is, the positioning source and the sensor will be blocked by the environment, and at the same time, the complex environment will generate random stray multipath signals, and the impact of the two will lead to inaccurate positioning results . [0003] In the current positioning sensor network, IRS (Intelligent reflective surface, intelligent reflective surface) is used to locate the signal source, but there is also a line-of-sight (LOS) distance between the posit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/02
CPCG01S5/0273
Inventor 刘元李建强李永军杨明林曾毅
Owner GUANGDONG COMM & NETWORKS INST
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