dvu
Active member
I have a 2013, was wondering if the GPS update automatic via Satellite cause I see nissan selling updated nav SD cards. Not sure if I need to buy it
No they do not, but it also sounds like you have a misunderstanding of how GPS works, in general.dvu said:I have a 2013, was wondering if the GPS update automatic via Satellite cause I see nissan selling updated nav SD cards. Not sure if I need to buy it
cwerdna said:No they do not, but it also sounds like you have a misunderstanding of how GPS works, in general.dvu said:I have a 2013, was wondering if the GPS update automatic via Satellite cause I see nissan selling updated nav SD cards. Not sure if I need to buy it
The GPS satellites (operated by the DoD: http://www.gps.gov/governance/agencies/defense/) have atomic clocks on them. GPS receivers use the time signals to triangulate where the receiver is on earth since the receiver is a different distance away from each satellite in its area overhead. More at http://www.trimble.com/gps_tutorial/howgps.aspx.
They do NOT beam down any map data (e.g. roads, boundaries, etc.) The map data must come from another source such as storage device (disc, memory card, etc.) or via a data connection (e.g. cellular data, your broadband connection, etc.)
This wouldn't be the first nor last time a dealer gave inaccurate info.dvu said:Thanks everyone. The dealer told me the maps updates automatically via satellite hence my assumption.
I'm well aware of Satellite and GPS functions. There are different types of satellites, the one I use and work with also support data transfer, similar to GoGo Inflight on airlines or Inmarsat used in the Maritime industry. Hence I believed them. Not a big deal.
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