What is GPS?
The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24
satellites placed into orbit by the U.S. Department of Defense. GPS was originally intended for military
applications, but in the 1980s, the government made the system available for civilian use. GPS works in any
weather conditions, anywhere in the world, 24 hours a day. There are no subscription fees or setup charges
to use GPS.
How it works
GPS satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth.
GPS receivers take this information and use triangulation to calculate the user's exact location. Essentially,
the GPS receiver compares the time a signal was transmitted by a satellite with the time it was received. The
time difference tells the GPS receiver how far away the satellite is. Now, with distance measurements from a
few more satellites, the receiver can determine the user's position and display it on the unit's electronic map.
More info at:
1. Garmin
2. Wikipedia
The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24
satellites placed into orbit by the U.S. Department of Defense. GPS was originally intended for military
applications, but in the 1980s, the government made the system available for civilian use. GPS works in any
weather conditions, anywhere in the world, 24 hours a day. There are no subscription fees or setup charges
to use GPS.
How it works
GPS satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth.
GPS receivers take this information and use triangulation to calculate the user's exact location. Essentially,
the GPS receiver compares the time a signal was transmitted by a satellite with the time it was received. The
time difference tells the GPS receiver how far away the satellite is. Now, with distance measurements from a
few more satellites, the receiver can determine the user's position and display it on the unit's electronic map.
More info at:
1. Garmin
2. Wikipedia
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What is GPS?
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