Precise positioning in challenging environments: a new approach to UWB-assisted navigation
en-GBde-DEes-ESfr-FR

Precise positioning in challenging environments: a new approach to UWB-assisted navigation

14/01/2025 TranSpread

In contemporary navigation systems, Global Navigation Satellite System (GNSS) technology is indispensable but encounters significant limitations in environments such as tunnels, underground spaces, and densely built urban areas due to signal shielding, multipath effects, and electromagnetic interference. These constraints have driven the evolution of multisource sensor-fusion navigation techniques. However, persistent issues like the inaccurate estimation of Ultra-Wideband (UWB) anchor positions and flawed sensor weighting continue to undermine the positioning precision and reliability of Visual-Inertial-UWB (VIU) systems. Addressing these critical issues necessitates focused research on refining UWB anchor position estimation and optimizing sensor weighting strategies.

On January 8, 2025, a research team a research team from the School of Geospatial Information at Information Engineering University, in collaboration with the State Key Laboratory of Geo-Information Engineering and the Shanghai Key Laboratory of Navigation and Location Based Services at Shanghai Jiao Tong University, unveiled their latest findings (DOI: 10.1186/s43020-024-00153-6) in the prestigious journal With increasing reliance on GPS technology, understanding and mitigating the effects of equatorial Satellite Navigation. Their study introduces a novel method to accurately estimate the position of a single UWB anchor with unknown coordinates, significantly enhancing VIU system performance in GNSS-denied environments. This breakthrough presents a promising solution for robust and precise navigation in challenging conditions.

The research proposes a comprehensive strategy to bolster VIU systems, employing a robust ridge nonlinear least-squares method to refine UWB anchor position estimations, thus mitigating cumulative errors and ensuring precise range measurements. A key innovation of the study is the introduction of a method grounded in the Geometric Dilution of Precision (GDOP) principle, enabling swift and accurate estimation of UWB anchor positions by treating various positions of a moving UWB tag as virtual anchors. Furthermore, the team developed a dynamically adaptive weighting approach based on the Helmert Variance Component Estimation (HVCE) principle, which assigns real-time data-driven weights to different sensors, significantly improving localization accuracy and system robustness. To validate these methods, the researchers designed a practical evaluation technique for estimating UWB anchor position errors in real-world environments. Extensive simulations and real-world experiments confirmed the method's superior performance over existing open-source systems like VINS-MONO and VIR-SLAM, marking a pivotal advancement in multisensor fusion navigation.

Guangyun Li, the study's corresponding author, emphasized the significance of their work: "Our method not only stabilizes UWB anchor position estimation but also offers a straightforward and effective means to evaluate positional accuracy. This represents a major leap forward in the field of multisensor fusion navigation."

The implications of this research are poised to revolutionize navigation in GNSS-challenged environments such as indoor spaces, urban canyons, and subterranean settings. The enhanced accuracy and resilience of the VIU system hold immense potential for advancing technologies in robotics, autonomous vehicles, and other sectors where precise positioning is critical. Looking to the future, the research team aims to integrate additional sensor data, including GNSS and LIDAR, to further elevate system capabilities. This visionary approach aspires to create a seamless, plug-and-play navigation solution that bridges indoor and outdoor environments, promising to significantly improve autonomy and reliability across diverse applications.

###

References

DOI

10.1186/s43020-024-00153-6

Original Source URL

https://doi.org/10.1186/s43020-024-00153-6

Funding information

This work was partially supported by the National Natural Science Foundation of China (NSFC) under Grant 42071454 and Grant 42371466, and the State Key Laboratory of Geo-Information Engineering under Grant SKLGIE2023-M-2-2.

About Satellite Navigation

Satellite Navigation (E-ISSN: 2662-1363; ISSN: 2662-9291) is the official journal of Aerospace Information Research Institute, Chinese Academy of Sciences. The journal aims to report innovative ideas, new results or progress on the theoretical techniques and applications of satellite navigation. The journal welcomes original articles, reviews and commentaries.

Paper title: Visual-inertial navigation assisted by a single UWB anchor with an unknown position
Attached files
  • Data collection platforms and experimental scenarios. a Large-scale testing grounds. b UAV collection platform. c Handheld collection platform. d Large-scale motion scenes. e Rotational motion scenes. f Limited motion scenes.
14/01/2025 TranSpread
Regions: North America, United States, Asia, China
Keywords: Science, Space Science

Disclaimer: AlphaGalileo is not responsible for the accuracy of news releases posted to AlphaGalileo by contributing institutions or for the use of any information through the AlphaGalileo system.

Testimonials

For well over a decade, in my capacity as a researcher, broadcaster, and producer, I have relied heavily on Alphagalileo.
All of my work trips have been planned around stories that I've found on this site.
The under embargo section allows us to plan ahead and the news releases enable us to find key experts.
Going through the tailored daily updates is the best way to start the day. It's such a critical service for me and many of my colleagues.
Koula Bouloukos, Senior manager, Editorial & Production Underknown
We have used AlphaGalileo since its foundation but frankly we need it more than ever now to ensure our research news is heard across Europe, Asia and North America. As one of the UK’s leading research universities we want to continue to work with other outstanding researchers in Europe. AlphaGalileo helps us to continue to bring our research story to them and the rest of the world.
Peter Dunn, Director of Press and Media Relations at the University of Warwick
AlphaGalileo has helped us more than double our reach at SciDev.Net. The service has enabled our journalists around the world to reach the mainstream media with articles about the impact of science on people in low- and middle-income countries, leading to big increases in the number of SciDev.Net articles that have been republished.
Ben Deighton, SciDevNet

We Work Closely With...


  • BBC
  • The Times
  • National Geographic
  • The University of Edinburgh
  • University of Cambridge
  • iesResearch
Copyright 2025 by AlphaGalileo Terms Of Use Privacy Statement