Session A1: Navigation Security and Authentication

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Date: Wednesday, September 10, 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	A Galileo PRS/HAS Compatible CRPA for Both PNT-Resilient and Accurate Positioning Lorena Tortajada Ropero, Rubén Morales Ferré, Javier Garcia-Madrid Velázquez, Raquel Montero Montero, Beatriz Bengoa Robles, and Antonio González Novell, Satellite Navigation Department, INDRA Space
8:57	Range Authentication of Galileo E1 / E5a Signals Using Artificial PRNs in Addition to the ACAS Method on a GNSS Hardware Receiver Benedikt Schreiber, Fabio Garzia, Rocío Parra, Himanshu Gupta, Anja Roas, Matthias Overbeck, Alexander Rügamer, Fraunhofer IIS; Jan Ackermann, and Mark Holbrow, Spirent Communications plc
9:20	Testing Galileo SAS with Encrypted Signal-in-Space Rafael Terris-Gallego, José A. López-Salcedo, Gonzalo Seco-Granados, Univ. Autonoma de Barcelona/IEEC; Aleix Galan-Figueras, Katholieke Univ. Leuven (KUL); Ignacio Fernandez-Hernandez, DG DEFIS, European Commission
9:43	An Analysis of Authentication Availability and Enhancements through Vector Tracking for Galileo OSNMA Data and SAS Spreading Code Authentication Toms Dorins, Thomas Pany, Dominik Dötterböck, Mohamed Bochkati, Institute of Space Technology and Space Applications, Universität der Bundeswehr München; Stefan Baumann, Nikolas Dütsch, Industrieanlagen-betriebsgesellschaft MBH; Andreas Wenz, and Roman Ehrler, SBB Swiss Federal Railways
10:05-10:35, Break. Refreshments in Exhibit Hall
10:40	Towards Resilient PNT: Developing and Testing the Riptide Black Sea Demonstrator Florin Mistrapau, Roxana Mihaela Clopot, Vladimir Kosjer, Calin Gabriel Ciobanu, Vlad Gabriel Olteanu, GMV; Irina-Beatrice Stefanescu, Mirela-Madalina Bivolaru, ROSA RC; Lucian Dumitrache, Petrica Popov, and Dumitru Andrescu, MHD
11:03	QZSS Signal Authentication Service Satoshi Hosoda, Yuichi Saida, Cabinet Office; Ren Terada, Naohiro Tanioka, Hitoshi Haruta, NEC Corporation
11:26	Jamming Source Localization using GPS Delta-range Measurements from Geostationary Satellite Moeko Hidaka, Makoto Tomitaka, Naoki Miyashita, Yu Nakajima, Toru Yamamoto, Japan Space Exploration Agency, Satoko Kawakami, Tomoaki Eda, Takahiro Shimizu, Ryo Harada, Susumu Kumagai, NEC Space Technologies, Ltd.
11:48	Analysis of a Transient Space-based GNSS Interference Source Zachary L. Clements and Todd E. Humphreys, University of Texas at Austin; Okuary Osechas and Valentin Fischer, Zurich University of Applied Sciences (ZHAW)
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.	Towards a Comprehensive Clustering-Aided Cross-Ambiguity Function Monitoring for GNSS Spoofing Detection Jan M. Becker and Ole Roggenbuck, Department of Geodesy, Federal Agency for Cartography and Geodesy
2.	Enhancing GNSS Resilience: Benchmarking 3D PNT Simulation Against Real-World Interference-Rich GNSS Environments Ricardo Verdeguer Moreno, Spirent Communications PLC; Miguel Angel Gomez Lopez, Instituto Nacional de Técnica Aeroespacial (INTA)
3.	Looking into the Galileo Signal Authentication Service: Early Demonstration of the Service and Experimentation M.A. Ramírez, S. Cancela, D. Calle, GMV; J. Wendel, R. Reinhard, Airbus; R. Terris, G. Seco-Granados, UAB; A. Dalla Chiara, Qascom; I. Fernández-Hernández, European Commission
4.	Design of Signal Authentication Capabilities for Next Generation GNSS G. Caparra, R. Ioannidis, G. Da Broi, M. Ceccato, L. Musumeci, J. A. Garcia-Molina, G. Lopez Risueno, S. Wallner, European Space Agency; I. Fernandez-Hernandez, European Commission

On-Demand Presentations Pre-recorded presentations will become available for viewing by registered attendees on Wednesday, September 10.
	Optimizing Performance of Space-Based Detection and Localization of Terrestrial GNSS RFI Based on the Direct Geolocation Algorithm using Vitis HLS Hepzibah Ernest and Thomas Pany, Universität der Bundeswehr München
	Performance Evaluation of Specific Force-aided Spoofing Detection Method in Complicated Scenarios Yu Wang, Chao Sun, Liangyu Qin, Lu Bai, Wenquan Feng, Yingzhe He, Shuai Zhang, Yuhang Yang, Haokun He, Beihang University

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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