Introduction
to GPS
The Global Positioning System
(GPS) is a space-based radio-navigation system consisting
of a constellation of satellites and a network of
ground stations used for monitoring and control. A
minimum of 24 GPS satellites orbit the Earth at an
altitude of approximately 11,000 miles providing users
with accurate information on position, velocity, and
time anywhere in the world and in all weather conditions.
GPS is operated and maintained
by the Department of Defense (DoD). The Interagency
GPS Executive Board (IGEB) manages GPS, while the
U.S. Coast Guard acts as the civil interface to the
public for GPS matters. The Federal Aviation Administration
is investigating and applying the use of GPS as it
pertains to aviation.
Next:
How GPS Works
GPS
Fact Sheet
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