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First tested by Pioneer 4, this 26-meter antenna would later become part of the Deep Space Network.
This graphic shows how personal radiometric and inertial navigation devices could allow incident commanders to keep track of firefighters within a burning building.
This graphic shows how personal radiometric and inertial navigation devices could allow incident commanders to keep track of firefighters within a burning building.
A combine, driven by farmer Tim Bardole, harvesting corn on his farm in Iowa. The combine is outfitted with a GPS guidance system.
ADS-B is the core technology of next-generation systems of air navigation and air traffic control.
The atomic clocks in the GPS system are so accurate that they take into account Albert Einstein’s understanding of time, space, and relativity.
Alphonsus crater taken by Ranger 9 Spacecraft.
A soldier using the Blue Force Tracker System.
A cesium clock like this was tested on the NTS-2 satellite to see if clocks could keep accurate time in space.
This atomic clock was built for the first GPS satellites in the late 1970s.
