Multimedia Gallery
- Topic: Navigation Tools
The image shows accuracy to within a radius of about 20 feet (6 meters).
The image shows accuracy to within a radius of about 148 feet (45 meters).
This artist's rendition of a new generation of GPS satellites.
GPS satellites are positioned in precise, circular orbits 18,000 kilometers (11,000 miles) above the Earth. They orbit once every 12 hours.
Length: 7 Minutes, 3 Seconds
The first military GPS five-channel receiver, weighing 270 pounds.
Jim Whittaker uses a Magellan GPS receiver on Mt. Rainier.
A post-war periscopic sextant often mounted this type of watch.
Developed navigation tools, trained distance fliers in air navigation, and advised the Army Air Corps
Most inertial navigation devises use a gyro that measures motion by the change in vibration of a cup-shaped device.
