- Total of 24 satellites make up GPS.
- It wasn't until 1994 did the military have the complete no. of satellites in orbit.
- Satellites can last for only ten years and to be replaced with another one.
- Satellites are powered by solar energy but are equipped by batteries which are only activated during solar eclipse.
- GPS device determines the user's precise location by calculating the time a signal is sent to receiver.
- The whole process takes the time lesser than one second to accomplish.
Monday, August 17, 2009
GLOBAL POSITIONING SYSTEM
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