Roger L. Easton
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Roger L. Easton (born April 30, 1921) is an American scientist. He is the principal inventor and designer of the Global Positioning System (GPS). In 1955, Easton co-wrote the Naval Research Laboratory's Project Vanguard proposal for a U.S. satellite program in competition with two other proposals, including a proposal from the U.S. Army prepared by Wernher Von Braun. The Eisenhower Administration selected Project Vanguard. Easton also invented the Minitrack tracking system to determine the Vanguard satellite's orbit. When Sputnik was launched in 1957 Easton extended the system to actively…mehr

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Roger L. Easton (born April 30, 1921) is an American scientist. He is the principal inventor and designer of the Global Positioning System (GPS). In 1955, Easton co-wrote the Naval Research Laboratory's Project Vanguard proposal for a U.S. satellite program in competition with two other proposals, including a proposal from the U.S. Army prepared by Wernher Von Braun. The Eisenhower Administration selected Project Vanguard. Easton also invented the Minitrack tracking system to determine the Vanguard satellite's orbit. When Sputnik was launched in 1957 Easton extended the system to actively follow unknown orbiting satellites. The Naval Space Surveillance System became the first system to detect and track all types of Earth-orbiting objects.