Sorry, I am Russian, this was the first thing that crossed my mind. American, UK and Australian analogues are listed here: https://en.wikipedia.org/wiki/Over-t

Sorry, I am Russian, this was the first thing that crossed my mind. American, UK and Australian analogues are listed here: https://en.wikipedia.org/wiki/Over-the-horizon_radar https://en.wikipedia.org/wiki/Over-the-horizon_radar