The Quiet Numbers Station: Decoding Nineteen Years of GPS Cryptography (opens in new tab)

The Global Positioning System (GPS) relies on its primary L1 frequency to broadcast precise timing and orbital data, allowing receivers on Earth to calculate their exact location. Because the L1 C/A signal transmits at just fifty bits per second, every bit of this navigation data must earn its place. Yet, within this highly constrained signal, … Continue reading The Quiet Numbers Station: Decoding Nineteen Years of GPS Cryptography