Editing Clock synchronization (section)

===Satellite navigation systems===
In addition to its use in navigation, the [[Global Positioning System]] (GPS) can also be used for clock synchronization. The accuracy of GPS time signals is ±10&nbsp;nanoseconds.<ref>{{cite web |url=http://tf.nist.gov/time/commonviewgps.htm |title=Common View GPS Time Transfer |publisher=[[National Institute of Standards and Technology]] |archive-url=https://web.archive.org/web/20121028043917/http://tf.nist.gov/time/commonviewgps.htm |archive-date=2012-10-28}}</ref> Using GPS (or other [[satellite navigation]] systems) for synchronization requires a receiver connected to an antenna with unobstructed view of the sky.