SBR
Original archive entry. The text, images and links below are kept as they were written.
The American Space-Based Radar system was to have replaced the US military's Airborne Warning and Control System (AWACS), Joint STARS (Surveillance, Targeting, and Attack Radar System), and Rivet Joint aircraft with satellites. Over-ambitious and over-budget, it was cancelled in the late 1990's.
More at: SBR.