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6 avr. 1994 - Global Positioning System (GPS)

Description:

last of 24 satellitese were launched to complete the GPS. Uses satellite signal to broadcast location in real time within 15 meters of accuracy.

Ajouté au bande de temps:

Cartography through Time

5 nov. 2017

Date:

6 avr. 1994

Maintenaint

~ Il y a 30 ans

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