Low-Cost SDR for GNSS Interference Mitigation Using Spatial Diversity Techniques †
Pallarés Rodríguez, Lucía (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes)
Gómez Casco, David (European Space Agency)
BniLam, Noori (European Space Agency)
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)
Crosta, Paolo (European Space Agency)

Date:	2025
Abstract:	This paper addresses the feasibility of implementing spatial diversity techniques to mitigate interference signals using low-cost GNSS receivers. Global Navigation Satellite Systems (GNSSs) remain at the core of navigation technologies and obtaining precise and robust positioning solutions in harsh scenarios becomes essential for the proper functioning of modern applications. Furthermore, this challenge is even more complex when mass-market receivers are addressed, since the previous requirements must be achieved while maintaining low-cost architectures. A promising solution is to use beamforming techniques, which exploit the spatial domain to achieve enhanced reliability and robustness. In this paper, the potential of beamforming in mass-market receivers is analyzed by implementing two interference mitigation techniques and using a five-channel low-cost software defined radio (SDR), KrakenSDR. The results show that the algorithms implemented are able to mitigate strong interference signals, allowing the GNSS receiver to compute an accurate positioning solution.
Grants:	Agencia Estatal de Investigación PDC2023-145858-I00
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Array processing ; Spatial diversity ; Beamforming ; Mass-market ; Interference ; Mitigation
Published in:	Engineering proceedings, Vol. 88, Núm. 1 (Març 2025) , art. 7, ISSN 2673-4591

DOI: 10.3390/engproc2025088007

10 p, 1.3 MB

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