Ukraine's new air defense system convinces Russian missiles they are in Peru — at one percent cost of Patriot - Euromaidan Press
AI Analysis
Ukraine is deploying the Lima electronic warfare system, developed by Cascade Systems and Night Watch, to spoof enemy GPS signals, redirecting incoming missiles and jamming drones at a fraction of the cost of traditional interceptors like the Patriot PAC-3. The system has reportedly jammed over 20,500 Shahed drones and redirected numerous missiles, with some being misdirected to locations as far away as Peru. Russia has attempted to counter Lima with upgraded 'Kometa' antennas, prompting Ukrainian engineers to develop further iterations.
Key Takeaways
- The Lima system utilizes GPS spoofing and jamming to disrupt enemy targeting, costing approximately €58,000 per station versus $3-5 million per Patriot PAC-3 interceptor.
- Over 400 Lima units have been deployed in Ukraine since July 2024, expanding to civilian infrastructure protection in October 2025.
- The system has demonstrated the ability to redirect cruise and ballistic missiles, diverting them from populated areas.
- Russian implementation of 'Kometa' antennas initially degraded Lima’s effectiveness, but Ukrainian engineers have developed countermeasures.
- Lima’s scalability through software and emitter networks offers a cost-effective alternative to interceptor-based air defense, particularly given Patriot missile shortages.
Why It Matters
The Lima system represents a significant shift in air defense strategy, demonstrating the potential of electronic warfare to offset the cost and limitations of kinetic interceptors. This approach is particularly relevant for Ukraine, facing a sustained barrage of Russian missiles and drones with limited access to Western air defense systems. The success of Lima could influence the development and deployment of similar EW systems by other nations.
Ukraine's new air defense system convinces Russian missiles they are in Peru — at one percent cost of Patriot - Euromaidan Press
Ukraine’s new air defense system convinces Russian missiles they are in Peru — at one percent cost of Patriot
Lima electronic warfare, Cascade Systems, Night Watch, Alchemist, Patriot PAC-3 alternative, Shahed jamming, Kometa antennas, Lima Quant
25/05/2026
3 minute read
Follow Euromaidan Press on Google News
Wreckage of a Russian drone that struck Kholodnohirskyi district of Kharkiv. Photo: Suspilne Kharkiv / Viacheslav Mavrychev
Ukraine’s new air defense system convinces Russian missiles they are in Peru — at one percent cost of Patriot
Ukraine seeks new methods of resistance to Russian missiles and drones. One of the solutions is the Lima electronic warfare system, developed by the Ukrainian defense startup Cascade Systems in collaboration with the Kyiv-based Night Watch team, Politico reports.
Lima reframes Ukraine's air defense economics. Rather than physically destroying targets with anti-missiles, the system jams and spoofs satellite navigation signals, feeding false coordinates to incoming weapons. One station costs approximately €58,000 to produce. Some 30 to 100 stations cover a major city.
The total for a metropolis runs to about €5 million, which is roughly the unit cost of a single American Patriot PAC-3 interceptor missile.
Lima has jammed more than 20,500 Russian Shahed drones and redirected dozens of cruise and ballistic missiles over the past 18 months.
How does it work?
When Russian weapons enter Lima's coverage zone, their guidance systems receive false satellite coordinates, including, during some attacks, signals that convinced the missiles they were in Peru, the developers said.
According to a developer using the callsign Alchemist, the spoofing approach allows Ukrainian operators to divert incoming Russian missiles into open fields rather than residential areas or critical infrastructure.
The system can also generate a "dead zone" in which Russian drones simply lose their guidance signal entirely.
400 Lima's are working in country
Cascade Systems has delivered more than 400 Lima units, with deployment beginning in July 2024, and civilian-infrastructure protection added since October 2025.
The cost asymmetry shapes Ukraine's air-defense planning amid sustained Patriot PAC-3 shortages: a single PAC-3 round costs between $3 million and $5 million, and Ukraine's inventory of the missile is limited.
The Lima approach scales horizontally with software and emitter networks rather than scarce hardware interceptors, and integrates with Ukraine's broader layered air defense.
What is Lima Quant?
In early 2025, Russian forces began installing upgraded "Kometa" controlled reception pattern antennas on their drones and missiles, temporarily reducing the effectiveness of earlier Lima versions.
Ukrainian engineers responded after several months of laboratory research with Li