Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Building positioning method based on UWB (ultra-wideband) technology

A positioning method and technology, which is applied in the field of RFID and UWB, can solve the problems of a large number, high cost, ultrasonic multipath effect and non-line-of-sight propagation, and achieve strong penetration, low power consumption, anti-multiple good diameter effect

Inactive Publication Date: 2012-09-12
SHANGHAI SHUWEI ELECTRONICS
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The overall positioning accuracy of ultrasonic positioning is high, and the structure is simple, but ultrasonic is greatly affected by multipath effects and non-line-of-sight propagation, and requires a large amount of investment in underlying hardware facilities, and the cost is too high

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Building positioning method based on UWB (ultra-wideband) technology
  • Building positioning method based on UWB (ultra-wideband) technology
  • Building positioning method based on UWB (ultra-wideband) technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0024] The inventive method mainly comprises two major parts;

[0025] (1) TOA distance estimation;

[0026] For a single-path additive white noise (Additive White Gaussian Noise, AwGN) channel condition, the root mean square error can be estimated using the distance of TOA ranging:

[0027] var ( d ^ ) ≥ c 2 2 π R SNR β

[0028] Among them, c is the speed of light, R SNR is the signal-to-noise ratio, and β is the effective bandwidth ...

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

No PUM Login to View More

Abstract

The invention discloses a building positioning method based on UWB (ultra-wideband) technology. The method includes TOA (time of arrival) distance estimate and weight selection by fuzzy logic, namely obtaining arrival time of a direct signal by weighting time of a first arrived signal and time of a strongest signal and calculating a weighting coefficient according to the fuzzy logic technology. Actual data indicates that positioning precision is highly enhanced by the method. Compared with traditional narrow bandwidth positioning system, the method has the advantages of high penetrating power, low power consumption, fine anti-multipath effect, high safety, low system complexity, high positioning precision and the like.

Description

Technical field: [0001] The invention relates to the technical fields of RFID and UWB (Ultra-Wideband, ultra-wideband), in particular to a building positioning method based on UWB technology. Background technique: [0002] At present, the following schemes are usually adopted for personnel positioning in China: [0003] 1. Infrared indoor positioning technology. The principle of infrared indoor positioning technology positioning is that infrared IR signs emit modulated infrared rays, which are received by optical sensors installed indoors for positioning. Although infrared rays have relatively high indoor positioning accuracy, infrared rays can only travel at a line-of-sight distance because light rays cannot pass through obstacles. The two main disadvantages of line-of-sight and short transmission distance make the indoor positioning effect very poor. When the logo is placed in the pocket or has walls or other occlusions, it cannot work normally. It is necessary to insta...

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
no application Login to View More
IPC IPC(8): G01S11/02
Inventor 尹启刚孙亚洲
Owner SHANGHAI SHUWEI ELECTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com