GNSS: Guiding the World from Space

Full transcript

High above our planet, a constellation of satellites quietly beams signals down to Earth, guiding everything from phones to airplanes. This system delivers what experts call PNT: Positioning, Navigation, and Timing, three essential ingredients for knowing exactly where and when you are. A receiver listens to multiple satellites at once, measuring how long each signal took to arrive, then triangulates its precise location. In aviation, pilots rely on this invisible web of signals to navigate skies safely, track altitude, and land with pinpoint accuracy. But these signals are faint and vulnerable: jamming can drown them out, leaving aircraft blind to their true position. Even trickier, spoofing can trick a receiver into believing a fake signal, silently steering it off course. That's where CRPA antennas step in, smartly filtering out interference and keeping aircraft locked onto real, trustworthy satellite signals.