6 papers
Decentralized GNSS at Global Scale via Graph-Aware Diffusion Adaptation
Xue Xian Zheng, Xing Liu, Tareq Y. Al-Naffouri
Network-based Global Navigation Satellite Systems (GNSS) underpin critical infrastructure and autonomous systems, yet typically rely on centralized processing hubs that limit scala…
LEO Constellations as a Decentralized GNSS Network: Optimizing PNT Corrections in Space
Xing Liu, Xue Xian Zheng, José A. López-Salcedo +2
With the rapid expansion of low Earth orbit (LEO) constellations, thousands of satellites are now in operation, many equipped with onboard GNSS receivers capable of continuous orbi…
GNSS Array-Based Multipath Detection Employing UKF on Manifolds
Abdelgabar Ahmed, Tarig Ballal, Xing Liu +2
Global Navigation Satellite Systems (GNSS) applications are often hindered by various sources of error, with multipath interference being one of the most challenging, particularly…
Positioning Using LEO Satellite Communication Signals Under Orbital Errors
Jie Ma, Pinjun Zheng, Xing Liu +3
Low Earth orbit (LEO) satellites offer a promising alternative to global navigation satellite systems for precise positioning; however, their relatively low altitudes make them mor…
LEO Satellite and RIS: Two Keys to Seamless Indoor and Outdoor Localization
Pinjun Zheng, Xing Liu, Yuchen Zhang +3
The contemporary landscape of wireless technology underscores the critical role of precise localization services. Traditional global navigation satellite systems (GNSS)-based solut…
Integrated Positioning and Communication via LEO Satellites: Opportunities and Challenges
Jie Ma, Pinjun Zheng, Xing Liu +2
Low Earth orbit (LEO) satellites, as a prominent technology in the 6G non-terrestrial network, offer both positioning and communication capabilities. While these two applications h…