(Weltraum) Jewel aka Odin's Eye (EU-Raketenwarnsystem)

[Milspec_1967]

Ok, dann halt nur in Routine seit 40 Jahren:
https://www.spaceforce.mil/About-Us/Fact...etonations.

"The program came to life with the first launch of a DSP satellite in the early 1970s. Since that time, DSP satellites have provided an uninterrupted space-based early warning capability."

Also vermutlich seit den 1980ern zumindest für die USA Routine.