The GIANO Project: Development of a Galileo-Based Timing Receiver for Increasing Critical Infrastructures Resilience

Catalano, Valeria; Marradi, L.; Franzoni, Gianluca; Puccitelli, Marco; Campana, R.; Muscinelli, Roberto; Poggi, Riccardo; Nogas, Pawel; Nawrocki, Jerzy; Detoma, E.; Prata, Ricardo

doi:10.33012/2020.17312

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“…Thus, a robust GNSS device should take into account different approaches to detect and mitigate interference, which can assume different forms. In the timing context, the development of robust GNSS technologies has been promoted by the European Commission, which has founded projects such as GalilEo Authenticated Robust timing System (GEARS) and Galileo-based tIming receiver for increasing criticAl iNfrastructures rObustness (GIANO) [ 6 ] to develop robust Galileo timing receivers with specific focus on critical infrastructures.…”

Section: Introductionmentioning

confidence: 99%

Multi-Layer Defences for Robust GNSS Timing Retrieval

Gioia

Borio

2021

Sensors

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A multi-layered interference mitigation approach can significantly improve the performance of Global Navigation Satellite System (GNSS) receivers in the presence of jamming. In this work, three levels of defence are considered including: pre-correlation interference mitigation techniques, post-correlation measurement screening and FDE at the Position, Velocity, and Time (PVT) level. The performance and interaction of these receiver defences are analysed with specific focus on Robust Interference Mitigation (RIM), measurement screening through Lock Indicator (LIs) and Receiver Autonomous Integrity Monitoring (RAIM). The case of timing receivers with a known user position and using Galileo signals from different frequencies has been studied with Time-Receiver Autonomous Integrity Monitoring (T-RAIM) based on the Backward-Forward method. From the experimental analysis it emerges that RIM improves the quality of the measurements reducing the number of exclusions performed by T-RAIM. Effective measurements screening is also fundamental to obtain unbiased timing solutions: in this respect T-RAIM can provide the required level of reliability.

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Section: Introductionmentioning

confidence: 99%