2025-12-16
21:10 |
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16 p, 3.5 MB |
Boundary conditions for snapshot-based spoofing detection using OSNMA unpredictable symbols
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Shahid, Husnain (Institut d'Estudis Espacials de Catalunya) ;
Egea-Roca, Daniel (Institut d'Estudis Espacials de Catalunya) ;
Canzian, Luca (Qascom SRL) ;
Sarto, Carlo (Qascom SRL) ;
Pozzobon, Oscar (Qascom SRL) ;
Reyes-González, J. (European Union Agency for the Space Programme) ;
Seco Granados, Gonzalo (Universitat Autònoma de Barcelona) ;
López Salcedo, José Antonio (Universitat Autònoma de Barcelona)
Anti-spoofing techniques for Global Navigation Satellite System (GNSS) receivers are garnering growing interest as crucial facilitators for the deployment of GNSS-based applications and services. To this end, Galileo is providing the Galileo Open Service Navigation Message Authentication (OSNMA), which conveys a set of cryptographic data with the purpose of authenticating the content of the Galileo I/NAV message. [...]
2026 -  10.1007/s10291-025-01968-9
GPS Solutions, Vol. 30, Num. 1 (February 2026) , art. 27
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2025-11-13
06:12 |
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2025-11-13
06:12 |
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Pathway to coherent phase acquisition in multi-channel USRP SDRs for direction of arrival estimation
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Xhafa, Alda (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
Fabra, Fran (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
López Salcedo, José Antonio (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
Seco Granados, Gonzalo (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
Lapin, Ivan (European Space Agency (Noordwijk))
This paper sheds lights onto the challenging problem of achieving coherent phase reception between the RF channels of existing multi-channel software-defined radios (SDR). This is a key problem that must be solved, for instance, in applications dealing with 5G positioning and integrated sensing and communications (ISAC) when direction of arrival estimation is needed. [...]
Institute of Electrical and Electronics Engineers, 2023 - 10.1109/SDS59856.2023.10329093
2023 Tenth International Conference on Software Defined Systems (SDS), 2023, p. 1-8
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2025-11-12
08:57 |
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2025-10-30
03:50 |
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Improving Galileo OSNMA time to first authenticated fix
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Galan-Figueras, Aleix (Katholieke Universiteit Leuven. Department of Electrical Engineering) ;
Fernandez-Hernandez, Ignacio (Katholieke Universiteit Leuven. Department of Electrical Engineering) ;
Wilde, Wim De (Septentrio NV (Leuven)) ;
Pollin, Sofie (Katholieke Universiteit Leuven. Department of Electrical Engineering) ;
Seco Granados, Gonzalo (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes)
Galileo is the first global navigation satellite system to authenticate its civilian signals through the open service navigation message authentication (OSNMA) protocol. However, OSNMA adds a delay in the time to obtain a first position and time fix, the so-called time to first authentication fix (TTFAF). [...]
2025 - 10.1109/TAES.2025.3570273
IEEE Transactions on Aerospace and Electronic Systems, Vol. 61, issue 5 (October 2025) , p. 11720-11735
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2022-02-24
12:22 |
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18 p, 682.6 KB |
Evaluation of 5g positioning performance based on utdoa, aoa and base-station selective exclusion
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Xhafa, Alda (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
Del Peral-Rosado, Jose Antonio (Airbus Defence and Space) ;
López Salcedo, José Antonio (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
Seco Granados, Gonzalo (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes)
Accurate and reliable positioning solution is an important requirement for many applications, for instance, emergency services and vehicular-related use cases. Positioning using cellular signals has emerged as a promising solution in Global Navigation Satellite System (GNSS) challenging environments, such as deep urban canyons. [...]
2022 - 10.3390/s22010101
Sensors (Basel, Switzerland), Vol. 22, Issue 1 (January 2022) , art. 101
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2022-01-12
10:50 |
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14 p, 2.3 MB |
Performance assessment of a low-complexity autoregressive Kalman filter for GNSS carrier tracking using real scintillation time series
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Locubiche-Serra, Sergi (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
Seco Granados, Gonzalo (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
López Salcedo, José Antonio (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes)
Ionospheric scintillation is one of the most challenging sources of errors in global navigation satellite systems (GNSS). It is an effect of space weather that introduces rapid amplitude and phase fluctuations to transionospheric signals and, as a result, it severely degrades the tracking performance of receivers, particularly carrier tracking. [...]
2022 - 10.1007/s10291-021-01193-0
GPS Solutions, Vol. 26, Issue 1 (January 2022) , art. 17
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2020-11-12
13:46 |
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23 p, 4.0 MB |
A Testbed for GNSS-Based Positioning and Navigation Technologies in Smart Cities : the HANSEL Project
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Minetto, Alex (Politecnico di Torino) ;
Dovis, Fabio (Politecnico di Torino) ;
Vesco, Andrea (LINKS Foundation. Torino) ;
Garcia-Fernandez, Miquel (Rokubun S.L. Barcelona) ;
López-Cruces, Àlex (Rokubun S.L. Barcelona) ;
Trigo, José Luis (Traffic Network Solutions S.L. Barcelona) ;
Molina, Marc (Traffic Network Solutions S.L. Barcelona) ;
Pérez-Conesa, Alejandro (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
Gáñez Fernández, Joaquín (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
Seco Granados, Gonzalo (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
López Salcedo, José Antonio (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes)
In urban contexts, the increasing density of electronic devices equipped with Global Navigation Satellite System (GNSS) receivers and complementary positioning technologies is attracting research and development efforts devoted to an improvement of the quality of life towards the smart city paradigm. [...]
2020 - 10.3390/smartcities3040060
Smart Cities, Vol. 3, Issue 4 (December 2020) , p. 1219-1241
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2020-06-03
06:24 |
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2019-10-03
11:42 |
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23 p, 3.4 MB |
Design, implementation and validation of a GNSS measurement exclusion and weighting function with a dual polarized antenna
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Egea-Roca, Daniel (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
Tripiana-Caballero, Antonio (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
López Salcedo, José Antonio (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
Seco Granados, Gonzalo (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes) ;
De Wilde, Wim (Septentrio (Bèlgica)) ;
Bougard, Bruno (Septentrio (Bèlgica)) ;
Sleewaegen, Jean Marie (Septentrio (Bèlgica)) ;
Popugaev, A. (Fraunhofer IIS (Alemanya))
Global Navigation Satellite Systems (GNSSs) have become a ubiquitous tool for our modern society to carry out vital tasks such as transportation, civil engineering or precision agriculture. This breath has reached the realm of safety-critical applications such as time management of critical infrastructures or autonomous vehicles, in which GNSS is an essential tool nowadays. [...]
2018 - 10.3390/s18124483
Sensors (Basel, Switzerland), Vol. 18, Num. 12 (December 2018) , art. 4483
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