That portion of the Global Positioning System that monitors and updates satellite signals and uploads correction data to the satellites. This worldwide chain of monitoring and control stations is responsible for controlling and managing the GPS satellite constellation.

See also Space Segment and User Segment.

TOP 10

1. travel guides

2. satellite navigation

3. gps

4. directions

5. route planner

6. satnav

7. atlas

8. postcodes

9. gis

10. compass

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