{"id":"64ec3662-a77a-51c1-98fc-65f995f49912","kind":"official","name":"Who cares about the Baltic Jammer? – Terrestrial Navigation in the Baltic Sea Region","slug":"who-cares-about-the-baltic-jammer-terrestrial-navigation-in-the-baltic-sea-region","url":"https://api.events.ccc.de/congress/2025/event/64ec3662-a77a-51c1-98fc-65f995f49912/?format=json","track":"security","assembly":"ccc","room":"85a6ba5d-11d9-4efe-8d28-c5f7165a19ce","location":null,"language":"en","description":"Since 2017, our team at DLR and partners across Europe have been working on an alternative to satellite navigation: **R-Mode**, a backup system based on terrestrial transmitters. Our main testbed spans the Baltic Sea — a region now infamous for GNSS jamming and spoofing.\r\n\r\nWe’ll start by showing what GNSS interference actually means in practice: aircraft losing navigation data, ships switching to manual control, and entire regions facing timing outages — such as the recent disruption of telecommunications in Gdańsk during Easter 2025.\r\n\r\nThen we’ll take you behind the scenes of building R-Mode: designing signals that can coexist with legacy systems, installing transmitters along the coast, and testing shipborne receivers in rough conditions. We’ll share personal moments — like the first time we received a stable position fix in the middle of the Baltic.\r\n\r\nFinally, we’ll talk about perception and politics: how a “research curiosity” became a critical infrastructure project, why ESA now wants to build a *satellite* backup (with the same vulnerabilities), and how it feels when your civilian open-source navigation system suddenly becomes strategically relevant.","schedule_start":"2025-12-27T12:50:00+01:00","schedule_duration":"00:40:00","schedule_end":"2025-12-27T13:30:00+01:00"}