Jammertest 2022 was a week-long series of satellite navigation and timing signal jamming and spoofing exercises carried out on the Norwegian island of Andøya in September of 2022. Organized via a collaboration between the Norwegian spectrum management authority, defense research establishment, public roads administration, metrology service, and others, the result was the largest known GNSS jamming and spoofing event open to international collaboration and provided an open-access data and publication policy for participants. This paper reviews the event’s organization, scheduled tests, noteworthy jamming observations, noteworthy spoofing observations, and the unexpected observations found during the event and also presents information on what data are publicly available to interested parties, along with the contact information needed to obtain these data.

Jammertest is the largest known GNSS jamming, meaconing, and spoofing test event in the world, which has an open policy towards both user participation and user communication with no restrictions on the sharing of data or publication of results. The organizers implemented several changes and enhancements within the 2023 test campaign to further broaden the appeal and applicability of the tests for as many demographics of GNSS users as possible. More than 200 participants from 19 nations took part in person from 18 to 22 September at the test sites along the west coast of the Andøy island. This paper summarizes the design and motivation of the tests and test venue with particular attention to the efforts taken to provide users with precision timing and frequency references independent of the denied and disrupted GNSS signals. Aspects of surveilling and enforcing unintentional emissions, and real-time communication and coordination to the large number of distributed participants are also discussed.

Jammertest, held annually in Andøya, Northern Norway, is the world’s largest open test for evaluating the resilience of Global Navigation Satellite System (GNSS) technologies against jamming, meaconing, and spoofing threats. Set in a remote Arctic location ideal for high-power interference testing with minimal societal impact, the event brings together a wide range of participants, from academia and industry to government agencies, to conduct real-world GNSS interference testing from a comprehensive and up-to-date Test Catalogue. Organised by a coalition of Norwegian authorities, Jammertest offers a unique environment and an inclusive approach to foster advancements in GNSS resilience without relying on strict regulation. This paper describes the background, approach, and technical setup, such as the transmissions, for the test week.