cªeÜ
direction . Our infographic describes
how the distances from 3 satellites
calculate the ground or 2D position of
an user segment on earth .
INFOGRAPHIC
HOW GPS WORKS
FACTS AND
FIGURES
DEMONSTRATING
THE GLOBAL
POSITIONING
SYSTEM
- Sheikh Asif Imran Shouborno,EEE
Introduction Description
GPS is an implementation of a
constellation of satellites. These
satellites are positioned 20,000 km
above the ground , and move at a
speed of 14,000 kph. Every satellite
broadcast two frequencies - 1,575.42
MHz (called Coarse Acquisition , CA,
or L 1 ) and 1,227.60 MHz (called
Precision, P, or L 2 ) . Combined , CA
and P forms an encrypted code, Y.
The waveform of Y measures
distance between a sat and the GPS
receiver , but cannot measure the Our Infographic satiates the desire to
know about the following facts :
➔ How many GPS satellites are
there ?
➔ What is the number of GPS sats
to confirm a position in 2D or 3D
?
➔ How did it all start ?
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