chrisgeigerphot
lvl.4
Flight distance : 64105660 ft
United States
Offline
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Having the ability to get a good lock from two different systems gives it a back up. In time of war these systems have been known to be less accurate. By comparing results from different systems the end result should be more accurate. I believe there are 4 separate GPS systems in use, Europe, US, China and Russian. The Europe and Chinese systems are not yet fully finished. There are also smaller systems for Japan and India but these don't cover the whole globe. Maybe in the future they will use the other systems as well. |
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