The U.S. Space Force has revived a decades-long dream of launching satellites with radars that can track moving vehicles on the ground. The new capability would help the Air Force replace a capability now performed by the Northrop Grumman E-8C Joint Surveillance Target Attack Radar System (J-Stars) fleet. The E-8C, which is scheduled for retirement in 2025, carries the APY-7 synthetic aperture radar, which has a ground moving-target indicator (GMTI) mode.
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