The Yenisei radar is equipped with remote-control stations, which allows it to effectively deal with jamming. For instance, the US Air Force has been so successful in many local conflicts because in almost every case, the air-defense systems employed by Americas opponents were neutralized by powerful and well-organized jamming systems. They wouldnt derail the Yenisei though. Thats because it traces and assigns targets with higher precision when countering powerful jamming. It is safe to assume that by accepting Yenisei into service, the Russian Aerospace Forces have removed the Americans tactical advantage.
Another key Yenisei feature is its sector-scanning capabilities (most radars can only do circular scans). This makes it possible for the radar to trace and assign ballistic missiles.