Session E3b: Advanced Technologies in High Precision GNSS Positioning

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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	Genesis - an ESA Mission at the Foundation of Navigation S. Gidlund, G. Fusco, P. Waller, E. Honoré-Livermore, E. Sakalauskaite, European Space Agency (ESA) Directorate of Navigation, ESA/ESTEC; W. Enderle, E. Schoenemann, J.C. Berton, Directorate of Operations, ESA/ESOC
8:57	QZSS CLAS: Performance Evaluation and Improvement against Severe Ionospheric Disturbances under High Solar Activity Natsuko Hayase, Susumu Saito, Ryosuke Saito, Seigo Fujita, Masakazu Miya, Rui Hirokawa, Kazutoshi Sato, Mitsubishi Electric Corporation
9:20	A New Paradigm in Nationwide GNSS Precise Positioning: Satellite-Broadcasted OSR Corrections via Homogeneous Network RTK Methodology Byungwoon Park, Yongrae Jo, Sungik Kim, Yebin Lee, Sejong University; Cheolsoon Lim, LIGNex1
9:43	Evaluating GEODNET Network Performance and its Impact on Consumer Navigation Applications Mike Horton, Yudan Yi, and David Chen, GEODNET
10:05-10:35, Break. Refreshments in Exhibit Hall
10:40	Low-Latency, Cloud-Based Positioning for Mobile Applications Landon Urquhart, York University, u-blox; Rodrigo Leandro, u-blox; Sunil Bisnath, York University
11:03	Enhanced Protection Level Based on Non-Gaussian Models with an Application to RTK Precise Positioning Yuting Gao, Jiakun Li, Xi'an University of Science and Technology; Baoyu Liu, Yang Jiang, and Yang Gao, The University of Calgary
11:26	Assessment of PPP-AR Based on IF Model Generalized to all Available Frequencies A. Hoareau, P. Sarri, A. Guinamard, R. Burtin, SBG Systems
11:48	Shedding Light on Factor Graph Optimization: An Analysis of the Structure and Dimensionality of the Optimization Problem for GNSS-PPP Axel Koppert, Eva Buchmayer, Institute of Geodesy, Graz University of Technology
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.	Comprehensive Performance Evaluation of QZSS CLAS Over Four Year (2021-2024) Spanning the Solar Maximum Hayato Shiono, Nobuaki Kubo, Tokyo University of Marine Science and Technology
2.	JPL Standalone Real-Time Precise Point Positioning Client for Scientific Applications Nacer Naciri, Larry Romans, Bela Szilagyi, Wei F. Yu, and Attila Komjathy, Jet Propulsion Laboratory
3.	Forward and Backward Iterative Testing Procedures to enhance Position Integrity with GNSS Bob van Noort, University of Technology Delft
4.	Investigating Cycle Slip Repair for Single and Multi-Frequency Smartphone GNSS Naman Agarwal and Kyle O'Keefe, Department of Geomatics Engineering, University of Calgary

On-Demand Presentation Pre-recorded presentations will become available for viewing by registered attendees on Wednesday, September 10.
	High Precision and Cost Efficiency: The Realization of a Nationwide PPP-RTK System Bowen Duan, Haohao Xin, Qiang Zhang, Mengxiang Tong, Yilong Yuan, Chang Liu Positioning Technology Center Tencent Technology (Beijing) Co., Ltd.

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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