Multimedia Gallery
- Innovations: GPS
The PLGR was smaller and lighter than the older Manpack GPS receiver.
A corn and soybean farmer from Rippey, Iowa.
Farmer Roy Bardole, seated in his office, views an agricultural GPS image on his computer monitor while field maps are laid out on his desk.
Farmer Roy Bardole seated at the controls of his combine in a cornfield on farm in Iowa. A GPS guidance system display is mounted at the top center on right side of cab.
This atomic clock was built for the first GPS satellites in the late 1970s.
The GPS Operations Center at Schriever Air Force Base in Colorado Springs controls the GPS satellites.
Sandia National Laboratories researcher Darwin Serkland measures the wavelength of a tiny laser for chip-scale atomic clocks.
The Seiko Epson Digital Assistant was one of the earliest devices to incorporate GPS navigation with communication features.
Intense solar activity causes material to erupt from the Sun.