The Military Missions, Discoveries and “What If” Moments that Led to the Development of GPS

In 1954, the Soviets launched the first artificial satellite to orbit the earth. Sputnik I was a man-made marvel that made it possible for radio signals to be detected from anywhere on earth with simple radio equipment. George Weiffenbach and William Guier from John Hopkins Applied Physics Laboratory (APL) picked up radio signals transmitted from […]