Daryal radar no relation warning
Ballistic Missile Early Warning System and PAVE PAWS (United States)
Duga radar, also known as the "Russian Woodpecker" (Russia)
Dnestr radar (1st generation Russian)
Daryal radar (2nd generation Russian)
Voronezh radar (3rd and current generation Russian)
Chain Home (British, now defunct)
Chain Home Low (British, now defunct)
ROTOR (British, now defunct)Optical sensors:
no relation