Evaluation of NovAtel's Jamming and Spoofing Detection and Mitigation Capabilities During Jammertest2024

In September 2024, the annual Jammertest event was conducted in Bleik, Norway, serving as a comprehensive testing ground for GNSS technologies under real-world interference conditions. The event, held on the island of Andøya, was designed to evaluate the performance and resilience of GNSS systems by broadcasting a variety of jamming and spoofing signals. These controlled tests simulated sophisticated hostile environments to assess the reliability and mitigation strategies of civilian GNSS signals and receiver technologies. This paper focuses on the performance of Hexagon ? NovAtel's OEM7 receivers, specifically their ability to detect and mitigate the effects of these intentional interferences. Leveraging data collected during Jammertest, the evaluation highlights the role of NovAtel's GNSS Resilience and Integrity Technology (GRIT) platform. GRIT is shown to provide advanced situational awareness and robust tools for identifying and mitigating interference across all GNSS frequency bands. This technology demonstrates efficacy under a range of challenging conditions, including multi-frequency and multi-band jamming, as well as spoofing attacks designed to mislead navigation solutions. Additionally, the paper presents results from the Galileo OSNMA feature. OSNMA, a cryptographic authentication service, adds an extra layer of security by validating the authenticity of GNSS data. The findings from Jammertest highlight the critical advancements in anti-jamming and anti-spoofing technologies. They emphasize the need for continuous innovation in GNSS receiver design to meet the challenges posed by evolving interference threats while ensuring reliable and secure navigation for civilian users.