Session E3a: LEO Satellites for Positioning, Navigation, and Timing

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Date: Thursday, September 11, 2025
Time: 8:30 a.m. - 12:15 p.m.
In-Person presenters in this session provide pre-recorded presentations for viewing by registered attendees on Wednesday, September 10.

In-Person Presentations These presentations will be given in-person at the conference. Presenters will provide a pre-recorded presentation for on-demand viewing by all registered attendees.
8:35	Enhancing GNSS with a Low Earth Orbit layer: ESA’s LEO-PNT In-Orbit Demonstration Mission R. Prieto-Cerdeira, P. Giordano, M. Cordero, F. Grec, A. Le Priellec, R. Sarnadas, E. Breeuwer, M. Anghileri, European Space Agency ESA/ESTEC
8:57	TrustPoint LEO PNT: Evaluating Geometric Strength, Urban Availability, and Multi-Constellation Integration Furqan Ahmed, Patrick Shannon, George Schmitt, and Anil Goparaju, TrustPoint, Inc.
9:20	Tight Integration of GNSS/LEO/INS in Dense Urban Environments Yoji Takayama, Akihiro Osugi, FURUNO ELECTRIC CO., LTD.; Thyagaraja Marathe, Jérôme Leclère, Bryan Chan, Xona Space Systems, Inc.
9:43	Joint Doppler and Direction-of-Arrival Based Positioning Using Starlink and OneWeb Satellites Paul El-Kouba, Sharbel Kozhaya, and Zak (Zaher) M. Kassas, The Ohio State University
10:05-10:35, Break. Refreshments in Exhibit Hall
10:40	Experimental Framework for Hybrid Navigation Terminals Exploiting LEO PNT Constellations Francis Soualle, Jose A. del Peral-Rosado, Gabriele Ligorio, Airbus Defence and Space GmbH; Florian Binder, Christian Lichtenberger, Thomas Pany, University of the Federal Armed Forces; Jon Winkel, Receiver Technology; Luca Canzian, Federica Rozzi, Marco Rotoloni, Stefano Garlaschi, Giacomo Castellan, Qascom; Ottavio Picchi, External Consultant for EC; Francesco Menzione, European Commission JRC; Juan Pablo Boyero, European Commission
11:03	Spatial Domain Multipath Modeling Based on LEO Enhanced GNSS and Application to Relative Positioning Chun Wang and Yang Gao, Department of Geomatics Engineering, Schulich School of Engineering, University of Calgary
11:26	Frequency-Varying LEO-Assisted GNSS Positioning in Urban Environments Songfeng Yang, Faculty of Engineering and Information Technology, The University of Melbourne
11:48	Hardware Simulation of Low-Earth-Orbit GNSS for Carrier Phase Ambiguity Resolution Claire Mah and Kyle O'Keefe, University of Calgary
Alternate Presentations Alternate presentations may be given in-person at the conference if other authors are unable to present. Alternate Presenters will provide a pre-recorded presentation for on-demand viewing by all registered attendees.
1.	Carrier Phase Differential Positioning Using Iridium Signals: Feasibility Analysis and Preliminary Findings Qi Zhang and Bing Xu, Department of Aeronautical and Aviation Engineering, The Hong Kong Polytechnic University
2.	Assessment of Potential System Interference through Radio Frequency Compatibility Analysis by Emerging LEO Constellations using L5 Frequency Himanshu Sharma, Dominik Doetterboeck, Thomas Pany, Universität der BundesWehr Munich

On-Demand Presentation Pre-recorded presentations will become available for viewing by registered attendees on Wednesday, September 10.
	Accuracy Loss in LEO Satellite Orbits and Clocks Using Different Interpolation Methods Beixi Chen, Jinqian Wang, Kan Wang, Meifang Wu, National Time Service Center, Chinese Academy of Sciences (CAS); University of Chinese Academy of Sciences (UCAS); Ahmed El-Mowafy, School of Earth and Planetary Sciences, Curtin University; Xuhai Yang, National Time Service Center, CAS, UCAS

12:15 p.m. – 1:15 p.m., Buffet Lunch in Exhibit Hall • 1:15 p.m. – 1:45 p.m., Free Time in Exhibit Hall

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