Emerging weaponry that can disrupt position, navigation and timing services has pushed the Pentagon to field alternatives to the Global Positioning System, but the business cases for many of those efforts are incomplete, the Government Accountability Office reported today . PNT services derived from GPS rely on ground stations, user-based receivers and a constellation of 31 satellites to triangulate a user’s location for both civil and military functions. Unintentional events like solar flares can interfere with that communication, as well...
