Programmable Multi -mobile device positioning method and device with programmable intelligent reflective surface
A technology of mobile equipment and positioning method, applied in the directions of measuring devices, instruments, navigation, etc., can solve the problems of large positioning error, great influence of positioning accuracy, inaccurate positioning, etc., and achieve the effect of reducing the average positioning error
Active Publication Date: 2022-04-26
PEKING UNIV
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[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
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[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...
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The invention provides a method, device, electronic equipment and readable storage medium for locating multiple mobile equipment assisted by a programmable intelligent reflective surface. The wireless access point determines multiple sampling points in the target area, and obtains the RSS of each sampling point in different RIS reflection configurations, so as to obtain the two-dimensional distribution relationship of RSS, and iteratively optimizes the RIS reflection configuration, so that according to the final The probability of the position of each mobile device at each sampling point under the RIS reflection configuration of the previous cycle obtained in one cycle, and the RSS of each mobile device under the RIS reflection configuration obtained in the last cycle, combined with the two-dimensional RSS Distribution relationship, calculate the probability of the position of each mobile device at each sampling point, and determine the position of each mobile device according to the calculation result. Through multiple cycles of iterative optimization, the RSS distribution in the target area can be continuously adjusted, and the RIS reflection configuration that minimizes the average positioning error of all mobile devices can be obtained, making the obtained positioning more accurate.
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...
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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