Abstract: | Periodic interference in Global Navigation Satellite System (GNSS) signals can be effectively suppressed using frequency domain excision, whereas instantaneous frequency-based methods achieve good performance for nonperiodic frequency modulated interference. In this study, we develop a novel interference suppression method that detects and characterizes these two types of interference. Once the interference type has been identified, the corresponding mitigation method is employed. To improve the mitigation performance against non-stationary chirp attacks, a modified adaptive notch filter-based instantaneous frequency estimation and interference mitigation method is developed. Experimental results indicate that the proposed approach outperforms both frequency domain and conventional adaptive notch filter-based interference mitigation methods. |
Published in: |
Proceedings of the 37th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2024) September 16 - 20, 2024 Hilton Baltimore Inner Harbor Baltimore, Maryland |
Pages: | 2984 - 2994 |
Cite this article: | Khan, Nabeel Ali, Aguado, Luis Enrique, "Adaptive Notch Filter Based Interference Characterization and Mitigation for GNSS Receivers," Proceedings of the 37th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2024), Baltimore, Maryland, September 2024, pp. 2984-2994. https://doi.org/10.33012/2024.19819 |
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