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The image explains the Global Positioning System (GPS) with three segments: space, control, and user. The space segment consists of 24 satellites orbiting Earth every 12 hours at about 20,200 km, with solar panels for energy and atomic clocks for precision; satellites transmit and receive data. The control segment involves a control center that tracks satellites, sends data back, and adjusts satellite orbits; information is synchronized with atomic clocks. The user segment includes a handheld receiver which calculates distances by comparing transmission time with reception time; users determine exact location by measuring distances from four satellites.
Given the complexity of the image, the above description may not be entirely accurate.
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The diagram illustrates how the GPS operates in purpose of helping citizens to find their position all over the world.
The principle consists of 24 satellites turning around Earth. There are 3 different segments and each one have their own functionality.
Satellites orbit one time during 12 hours at an altitude approximately of 20000 km in the space segment. One satellite have 3 sub-assembly which consists to provide energy, receive and give back an answer and keeping the exact time of the information. In the control segment, the signal sending by the user is kept as first by the control center in order to send an exact information to the satellite before broadcasting this one.
Thanks to the time of transmitting message with the distance, the satellites calculates everything of this data to know the exact location of a citizen due to the fact that satellites continually kept this information. That call the user segment.
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