The advent of GPS-guided bombs in 1991’s Gulf War was a revelation. The world watched transfixed as U.S. generals briefed before screens showing scratchy black and white videos of American weapons blasting bridges, buildings and brigades with amazing precision. Potential foes were dutifully impressed, and have spent a lot of time figuring out how to disable or destroy the satellite-based Global Positioning System that cheaply turns dumb bombs into smart ones—and gets the planes carrying them to the right spot.
“Over the last several years, many potential adversaries have invested significantly in counter measures associated with Global Positioning System (GPS) guided weapons,” the Air Force warns in its formal Mar. 5 call for help developing something to replace GPS if a foe knocks it off line. “The Air Force Research Laboratory’s (AFRL’s) response to this challenge is the Celestial-aided Strike at Any Range (CStAR) program.”
GPS is a constellation of…
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