Engineers Test Global Satellite Navigation Resilience Against Signal Jamming in Norway

OPA WIRE, Oct 21 (OPA) — Harald Hauglin, a senior engineer at the Norwegian Metrology Service, leads an annual event known as 'JammerTest' in Bleik, Andøya. The exercise involves intentionally disrupting satellite signals to evaluate the vulnerability of receivers used in drones, clocks, and industrial equipment. By simulating signal jamming and spoofing, researchers assess how modern digital infrastructure reacts when its reliance on precise timing and location data is compromised.

GNSS networks provide more than just navigation; they serve as the backbone for time-synchronization across global telecommunications, power grids, and stock exchanges. Satellite signals are inherently weak, making them susceptible to stronger, malicious interference. Since Russia’s full-scale invasion of Ukraine, reports of GPS interference have surged, affecting aviation and maritime operations across Europe. In May, a Royal Air Force aircraft encountered GPS disruption near the Russian border, while Swedish transport authorities reported daily incidents throughout September 2025.

Unlike highly restricted military trials, such as those conducted at the White Sands Missile Range in New Mexico, the Norwegian event operates as an open-access 'white-hat' hackathon. Participants from government agencies and private firms share findings on how receivers handle false data, such as incorrect location coordinates or time stamps. This collaborative approach aims to identify systemic weaknesses before they can be exploited in real-world scenarios.

The long-term risk involves sustained outages that exceed the capacity of local backup timing systems. As digital synchronization degrades, the potential for cascading failures across interconnected infrastructure grows. The duration a system can remain operational without GNSS depends on the investment in ground-based atomic clocks and fiber-optic timing distribution. These physical backups are increasingly viewed as essential strategic assets for nations preparing for potential disruptions to satellite-based navigation.