Multi-Frequency, Multi-Constellation INS-Assisted GNSS for Improved Navigation Under Jamming Conditions

Abdelsatar Elmezayen, Haidy Elghamrawy, Malek Karaim, Aboelmagd Noureldin

Peer Reviewed

Abstract: The low power of global navigation satellite system (GNSS) signals and their vulnerability to disruption sources, such as signal jamming, can cause severe degradation or interruption in GNSS position, navigation, and timing services. However, the modernization of GPS with multi-frequency signals and the availability of signals from multi-constellation GNSS systems such as Galileo and GLONASS increase the immunity of GNSS-based navigation to signal jamming. Integration of GNSS and inertial navigation systems (INS) in one navigation system can also provide better performance than standalone systems. This paper aims to evaluate the performance of GNSS receivers under jamming conditions when accessing GPS only and when enabling Galileo and GLONASS signals. Experiments were performed using advanced GNSS signal simulators to generate semi-real data sets. The performance of a standalone GNSS receiver and the integrated GNSS/INS system was evaluated under different jamming power levels. Results have shown higher resistance to signal jamming when allowing access to multiple frequencies on GPS other than L1 only. Enabling signals from multiple GNSS constellations further improved the receiver’s anti-jamming capabilities. Integration of the GNSS receiver’s output with a navigation solution from INS increased the robustness of the system in terms of navigation under signal jamming conditions.
Published in: Proceedings of the 36th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2023)
September 11 - 15, 2023
Hyatt Regency Denver
Denver, Colorado
Pages: 3849 - 3860
Cite this article: Elmezayen, Abdelsatar, Elghamrawy, Haidy, Karaim, Malek, Noureldin, Aboelmagd, "Multi-Frequency, Multi-Constellation INS-Assisted GNSS for Improved Navigation Under Jamming Conditions," Proceedings of the 36th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2023), Denver, Colorado, September 2023, pp. 3849-3860. https://doi.org/10.33012/2023.19389
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