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- Innovations: GPS
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Artifact
A hand-held GPS receiver that provided geographic coordinates and a graphical display.
Illustration
Aircraft equipment interprets time signals received from a network of satellites.
Illustration
The image shows accuracy to within a radius of about 20 feet (6 meters).
Illustration
The image shows accuracy to within a radius of about 148 feet (45 meters).
Illustration
This artist's rendition of a new generation of GPS satellites.
Illustration
GPS satellites are positioned in precise, circular orbits 18,000 kilometers (11,000 miles) above the Earth. They orbit once every 12 hours.
Film
Length: 7 Minutes, 3 Seconds
Photograph
The first military GPS five-channel receiver, weighing 270 pounds.