US-A Russian military naval surveillance radar satellite. The US-A (later known as RLS) was a nuclear powered RORSAT (Radar Ocean Reconnaissance Satellite). Ocean surveillance, active radar satellite, Russia. Launched 1970 - 1988. Used US-Bus. |
Pirs-1 Russian military naval surveillance radar satellite. 2 launches, 1987.02.02 and 1987.07.10 . |