ネタ | Cell phone jammers block some nasty signals道場 | ホビー・ゲーム | まにあ道

In 2023, our visitors were drawn to two contrasting aspects. On one hand, the accounts of Russia's interference with Ukraine's satellite systems and the challenges faced by 5G technology globally piqued their curiosity. On the other hand, readers were equally enthusiastic about exploring the latest advancements in the field. They eagerly sought information on the groundbreaking data rate records being shattered and the innovative methods employed to ensure secure identities and authentications.

The extent of satellite jamming has hit a new nadir.

Russia’s ongoing invasion of Ukraine has, over its nearly two-year course, has revealed a lot about the current state of electronic warfare. In early 2023, it became clear that one new branch of electronic warfare was the jamming of low Earth orbit (LEO) communications satellites. These satellites—typically CubeSats, and orbiting 2,000 kilometers or lower—have brought new challenges to satellite jamming compared to their bus-sized geostationary brethren.

A notable feature of LEO satellite constellations is their frequent handoff of signals to the succeeding satellite as it appears on the horizon. This handoff occurs approximately every 7 to 10 minutes, presenting an opportunity for jamming signal to disrupt the signal. Furthermore, LEO satellites typically have constrained space, computing capabilities, and power for implementing security measures, unlike their larger counterparts. Additionally, many of these satellites rely on off-the-shelf components that may possess additional vulnerabilities.