How does my sat-nav really know where I am?
bbc.com
How does my sat-nav really know where I am?
It has brought military grade satellite positioning to the comfort of your car. But how does it work? James May steers us through the science behind sat-nav.
Sep 28, 2013
Satellite Navigation Systems
🟥SUBJECT: GPS versus GNSS GPS (Global Positioning System) is one specific satellite navigation system, owned and operated by the United States. It’s just one part of the global family of navigation systems. GNSS (Global Navigation Satellite System) is the general term for all satellite navigation systems worldwide including GPS and others. ==== 🇺🇸 GPS (Global Positioning System) – USA 🛰️ 31–33 satellites 🌐 Global coverage 🇷🇺 GLONASS (Global Navigation Satellite System) – Russia 🛰️ 23–24
0:28
🟥SUBJECT: GPS versus GNSS GPS (Global Positioning System) is one specific satellite navigation system, owned and operated by the United States. It’s just one part of the global family of navigation systems. GNSS (Global Navigation Satellite System) is the general term for all satellite navigation systems worldwide including GPS and others. ==== 🇺🇸 GPS (Global Positioning System) – USA 🛰️ 31–33 satellites 🌐 Global coverage 🇷🇺 GLONASS (Global Navigation Satellite System) – Russia 🛰️ 23–24
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