The 50th Space Wing at Schriever AFB, Colo., has completed the first of a two-phase Global Positioning System (GPS) constellation expansion known as "Expandable-24," the wing said recently. When fully complete, this expansion will increase global GPS coverage and provide civil, military and commercial users with more robust satellite availability and a higher probability of signal acquisition in terrain-challenged environments, according to the Air Force. The GPS constellation consists of 24 operational slots positioned within six equally-spaced orbital planes surrounding…
Air Force Expands GPS Coverage By Repositioning Satellites
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