Preliminary Analysis of GNSS Radio Frequency Interference Events Detected in Canada and Impacts on GNSS Based Applications

Anurag Raghuvanshi, Sunil Bisnath, Jason Bond

Peer Reviewed

Abstract: Global Navigation Satellite Systems (GNSSs) transmit signals from space to Earth, enabling the determination of position, navigation and timing (PNT) information. National defence uses, safety-of-life applications and critical infrastructure (CI) sectors are just some of the areas that rely on PNT information provided by GNSS to improve safety and security, enable greater functionality, and increase productivity. PNT information has also become a fundamental enabler for many day-to-day applications ranging from the provision of directions while driving to fitness statistics on smartwatches to precision farming. This paper presents the findings of an in-depth analysis conducted on GNSS interference data collected from a specific site in Canada. The primary focus of this study was to examine the frequency, type, and severity of interference events observed at the site. The analysis provides valuable insights into the use of detectors, the nature of interference encountered, their potential sources, and their impact on the site's operations. Furthermore, this paper presents GNSS receiver parameters that can be utilized for automatic interference detection, along with technical recommendations for future detection algorithms. The detectors at the site have proven effective in detecting various types of interference including narrow band, chirp and single tone. The interference has a significant effect on C/N_0, number of satellites tracked, receiver noise, etc. and a loss of lock of signals can be encountered.
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: 4130 - 4144
Cite this article: Raghuvanshi, Anurag, Bisnath, Sunil, Bond, Jason, "Preliminary Analysis of GNSS Radio Frequency Interference Events Detected in Canada and Impacts on GNSS Based Applications," Proceedings of the 36th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2023), Denver, Colorado, September 2023, pp. 4130-4144. https://doi.org/10.33012/2023.19382
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