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Photograph
The successful operation of a satellite navigation system requires around-the-clock monitoring of the satellites’ health and the periodic replacement of older satellites.
Photograph
The increasing reliance on navigation satellites for military and commercial activities makes them a tempting target for an enemy.
Photograph
Preparation of GOES spacecraft launched during the 1970s and 1980s.
Photograph
Charlie Buhler (left), Al Jacoby (middle), and
Roy Harding (right) of NRL install thermal blankets on the NTS-2 qualification model.
Photograph
Smithsonian scientist with a vehicle equipped with a Transit land navigation system.
Photograph
Engineers testing a transmitter for the 621B system.
Film
Length: 2 Minutes, 10 Seconds
Film
Length: 1 Minutes, 32 Seconds
Film
Length: 2 Minutes, 2 Seconds