Lima, developed by Cascade Systems, a Ukrainian defense startup registered in the U.S., generates powerful jamming fields that disrupt satellite navigation.
If satellite signals are blocked, Russian long-range weapons can continue flying using inertial navigation systems, but their accuracy can deviate by about 2 kilometers for every 100 kilometers traveled — meaning they are less likely to hit their targets.
“When Lima is on, it makes missile deviation even greater. In addition to simply suppressing navigation, we use spoofing and the substitution of coordinates by several kilometers. We can make their missiles fall in fields instead of hitting their targets,” said Alchemist, a Lima developer and commander of the Night Watch, an electronic warfare unit of the territorial defense forces of Ukraine. He asked to be identified only by his call sign for security reasons.
Lima’s appeal lies partly in its scale and cost. Unlike many other tactical jammers, Lima can cover large swaths of territory, protecting critical infrastructure. Each unit costs up to 3 million hryvnia (€58,000) to produce, depending on the iteration, according to Cascade. The company estimates that it takes 30 to 100 units to protect a major city — around €5 million.
That’s about the cost of a single Patriot PAC-3 missile.
Cascade has already supplied more than 400 Limas. The military began using them in July 2024, and their use was broadened to also defend civilian infrastructure in October 2025.