High-precision indoor positioning method based on multi-source data fusion

An indoor positioning and multi-source data technology, applied in the field of communication, can solve problems such as loss of function, impenetrable satellite signals, low positioning accuracy of mobile base stations, etc., and achieve the effect of reducing uncertainty

Pending Publication Date: 2021-06-04
HOHAI UNIV
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But for the indoor environment, on the one hand, the satellite signal cannot penetrate the building and lose its effect; on the other hand, the positioning accuracy of the mobile base station is too low to meet the indoor accuracy requirements, coupled with the inevitable multipath effect and people walking interference, so how to reduce the error caused by these interferences has become the focus of industry research

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
  • High-precision indoor positioning method based on multi-source data fusion
  • High-precision indoor positioning method based on multi-source data fusion
  • High-precision indoor positioning method based on multi-source data fusion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] figure 1 It is a flow chart of the high-precision indoor positioning method based on multi-source data fusion of the present invention. Such as figure 1 As shown, the high-precision indoor positioning method based on multi-source data fusion of the present invention includes:

[0018] First, perform antenna delay correction on the positioning base station; this can ensure that the frequency difference of its crystal oscillator can meet the needs of the project.

[0019] Then use the UWB positioning and ranging data receiving device to collect TOF message data, and perform related analysis to separate the information with reference value.

[0020] Then, through channel estimation, the collected ranging data is used for NLOS feature recognition, the NLOS ranging data is separated, and the separated NLOS data is reconstructed by the EKF algorithm.

[0021] Finally, the processed TOF ranging data and signal strength are fused to obtain the first-level fusion data, and th...

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 relates to a high-precision indoor positioning method based on multi-source data fusion. The method comprises the following steps of: performing antenna delay correction on a positioning base station, collecting TOF (Time of Flight) message data by using UWB (Ultra Wideband) positioning and ranging data receiving equipment, performing related analysis, and separating information with a reference value; carrying out NLOS feature recognition on the collected ranging data through channel estimation, separating out NLOS ranging data, and carrying out reconstruction processing on the separated NLOS data through an EKF algorithm; and fusing the processed TOF ranging data with the signal intensity to obtain first-level fusion data, and calculating optimal matching coordinate information through a corresponding data fusion rule and second-level fusion data obtained through the estimator 2.

Description

technical field [0001] The present invention relates to the communication field, in particular to a high-precision indoor positioning method based on multi-source data fusion. Background technique [0002] Indoor positioning is a promising research direction, which has the characteristics of small area, serious multipath propagation, and easy to change positioning environment. For the outdoor environment, there are currently satellite positioning (GPS, Galileo, Beidou and other systems) or mobile base station positioning. [0003] But for the indoor environment, on the one hand, the satellite signal cannot penetrate the building and lose its effect; on the other hand, the positioning accuracy of the mobile base station is too low to meet the indoor accuracy requirements, coupled with the inevitable multipath effect and people walking interference, so how to reduce the errors caused by these interferences has become the focus of research in the industry. Contents of the in...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W4/33H04W4/021H04W64/00
CPCH04W4/021H04W4/023H04W64/006H04W4/33
Inventor 李卓群李东新
Owner HOHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap