In the early hours of 4 September 2025, Ukrainian Defense Forces reportedly struck two radar installations in southern Russia’s Rostov Oblast. Militarnyi reports that the targets were the “Navigation of the South” radar complex (RLS-1) and a site located at a former air defense base.

Ukrainian strike hits Rostov aviation radar

The RLS-1 “Navigation of the South” is part of the Aeronavigation South branch infrastructure in Rostov-on-Don. It performs key functions in air traffic management over southern Russia, including aircraft detection and tracking, route coordination, flight support, aviation radio communication, and fixed satellite links. The complex is part of Russia’s centralized air traffic control system.

Ukrainian Telegram channel Krymskyi Veter reported that a fire broke out at the site on 4 September, as shown by NASA’s FIRMS map that features detected thermal signatures at the location. 

Strike also hits former air defense base

NASA data also show that the second site was on the grounds of a former air defense unit (military unit 65312) and military town that previously hosted the 1244th anti-aircraft missile regiment, which had been equipped with S-300PS surface-to-air missile systems in the 1990s. In 1997, the unit was merged with the 584th regiment and moved to Maryino in Moscow Oblast.

Militarnyi notes that Russia likely decided to restore the site for use in the war. A radar complex similar to RLS-1, believed to perform similar tasks, is located at the site. 

August radar strike in occupied Crimea

On 12 August, Ukrainian Special Operations Forces destroyed the Skala-M radar station in Russian-occupied Crimea. The station was used for air traffic control along routes and approach zones, with a range of up to 350 kilometers. Images published by Dnipro Osint showed the station before and after the strike.