The notion of RADAR/electronic fences for aircrafts extended to space objects
Three nations possess similar systems: U.S., Russia and France
France: VHF phased array RADAR with emission site near Dijon and reception site at Apt, near Avignon - Owned by the French Air Force, operated by ONERA
U.S.: formely NAVSPSUR, Air Force Space Surveillance System or VHF Space Fence to be replaced by S-band Space Fence (2nd generation, 2-4 GHz) at Marshall Islands & Australia
Russia: Крона space object recognition station, North Caucasus
Selected reference - pdf http://bit.ly/39ijiZQ
"Les incroyables pépites méconnues de l'Onera"
Article de Michel Cabirol pour "La Tribune"