Apple Event: May 7th at 7 am PT
There seems to be a lack of info regarding the GPS capability of the new iPads/mini's. The wifi-only ones seem to have no GPS
functionality. And I assume the "Assisted GPS" means that your position is derived via cellular triangulation rather than
a true embedded GPS receiver that calculates based on satellite reception that is encapsulated by an APP.
iPad 2 Wi-Fi + 3G, iOS 7.0.3
The wifi-only devices use wifi node IDs for location services. Apple maintains its own database of wifi nodes and approximate locations, and a wifi-only device can use the wifi node hardware address to look up its approximate location in that database.
A wifi+cellular device has a GPS receiver in it, and can directly receive GPS/GLONASS satelitte timing signals from which it can compute a location fix.
aGPS simple means that the native GPS function can be augmented by various other tools to improve the speed with with a location fix can be obtained. They can use wifi-node location data, and cellular tower signal data to speed up the computation of the location fix. But they can also work in the complete absence of any wifi nodes or cellular towers. A wifi+cellular iPad can obtain a GPS fix in the middle of the Gobi desert if needed, as long as it has open access to the sky overhead to receive satellite data.
assisted just means that - additional features that, when available, can or may assist the native GPS system. The aGPS system still has a fully functional standalone GPS receiver and GPS location calculation algortithms.
The wifi-only devices use wifi node IDs for location services. Apple maintains its own database of wifi nodes and approximate locations, and a wifi-only device can use the wifi node hardware address to look up its approximate location in that database.
A wifi+cellular device has a GPS receiver in it, and can directly receive GPS/GLONASS satelitte timing signals from which it can compute a location fix.
aGPS simple means that the native GPS function can be augmented by various other tools to improve the speed with with a location fix can be obtained. They can use wifi-node location data, and cellular tower signal data to speed up the computation of the location fix. But they can also work in the complete absence of any wifi nodes or cellular towers. A wifi+cellular iPad can obtain a GPS fix in the middle of the Gobi desert if needed, as long as it has open access to the sky overhead to receive satellite data.
assisted just means that - additional features that, when available, can or may assist the native GPS system. The aGPS system still has a fully functional standalone GPS receiver and GPS location calculation algortithms.
it's not cellular triangulation
that tech would be very dangerous to make car navigation based on but people have been believing it is since a-gps first game out
Thanks This answers my question!
just what does "Assisted GPS" mean
