The soviets did exactly that so they can attack large US convoys with long-range Anti-Ship Missiles
They had to use a fission reactor onboard those satellites to power the radar array
It consisted of 2 satellite types. US-A (active) and US-P (passive). US-A used radar and US-P used passive antennas so they can "see" signals from ships.
They had to use a fission reactor onboard those satellites to power the radar array
It consisted of 2 satellite types. US-A (active) and US-P (passive). US-A used radar and US-P used passive antennas so they can "see" signals from ships.
https://en.wikipedia.org/wiki/US-A
Late Cold War AShM's (SS-N-19 Shipwrecks) could use those satellites directly to update the target location in-flight
https://en.wikipedia.org/wiki/Legenda_(satellite_system)