Re:iPhone 14 Pro comes with dual-frequency GPS
by pxeboot on Saturday September 10, 2022 @12:10PM
(#32791886)
This is actually how all gps devices still work, including the latest smartphones and watches. It's just that now, devices can pre-download the almanac over your data connection, mostly eliminating that delay.
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Re:iPhone 14 Pro comes with dual-frequency GPS
by matt_attack on Saturday September 10, 2022 @12:39PM
(#32792187)
Well most offline devices don't take minutes now except for the first fix in a long time. It's generally around 30 seconds to a minute.
Usually the almanac is stored in non-volatile memory so additional startup fixes are much faster.
Re:iPhone 14 Pro comes with dual-frequency GPS
by joecool1029 on Saturday September 10, 2022 @02:16PM
(#32793108)
It's more than that too, old receivers couldn't track and download from as many satellites at once. All modern receivers can pull almanac/ephemeris data from pretty much everything they see at once now.