Multi-mobile-device positioning method and device assisted by programmable intelligent reflecting surface
A technology of mobile equipment and positioning method, which is applied in measurement devices, instruments, navigation and other directions, and can solve the problems of limited positioning accuracy, great influence of positioning accuracy, and large positioning error.
Active Publication Date: 2020-11-10
PEKING UNIV
View PDF3 Cites 13 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] However, the positioning accuracy of the above-mentioned related RSS-based positioning technology is greatly affected by the distribution of RSS in space, and the positioning error obtained by some unsatisfactory RSS distributions will be large
Specifically, under the unideal RSS distribution, the RSS values of different sampling points are relatively close, so these sampling points are difficult to distinguish by RSS value, so the positioning accuracy will be greatly limited by the given RSS distribution, resulting in positioning Inaccurate
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0074] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0075] Location-based services such as navigation and tracking are an integral part of the mobile Internet. Outdoor location services generally use the global positioning system or the Beidou navigation system to provide location information. However, in indoor environments, the signal of these systems will be blocked by walls, so the accuracy is relatively poor. Among the related technologies, the technology based on RSS is commonly used. Specifical...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a programmable intelligent reflecting surface assisted multi-mobile device positioning method and device, an electronic device and a readable storage medium. A wireless access point determines a plurality of sampling points in the target area, and acquires RSS of each sampling point in different RIS reflection configurations, thereby obtaining a two-dimensional distributionrelationship of the RSS, and performing iterative optimization on the RIS reflection configurations to calculate and obtain the probability of the position of each mobile device at each sampling pointaccording to the probability of the position of each mobile device at each sampling point according to the probability of the position of each mobile device at each sampling point under the RIS reflection configuration of the last period obtained in the last period and the RSS of each mobile device under the RIS reflection configuration obtained in the last period in combination with the two-dimensional distribution relationship of the RSS. The position of each mobile device is determined according to the calculation result. Through iterative optimization of multiple periods, RSS distributionin the target area can be continuously adjusted, RIS reflection configuration enabling the average positioning error of all mobile devices to be minimum is obtained, and obtained positioning is moreaccurate.
Description
technical field [0001] The invention relates to the technical field of equipment positioning, in particular to a multi-mobile equipment positioning method and device assisted by a programmable intelligent reflective surface. Background technique [0002] Location-based services such as navigation and tracking are an integral part of the mobile Internet. Outdoor location services generally use the global positioning system or the Beidou navigation system to provide location information. However, in indoor environments, the signal of these systems will be blocked by walls, so the accuracy is relatively poor. [0003] In related technologies, the system first acquires RSS values at different sampling points by means of experimental measurement or channel modeling to form an RSS distribution map. The position of the mobile device is then estimated by comparing the RSS value measured by the mobile device with the RSS profile. [0004] However, the positioning accuracy of the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/20H04W64/00
CPCG01C21/206H04W64/00
Inventor 宋令阳张浩波张泓亮邸博雅边凯归
Owner PEKING UNIV