4 ms·
It's also a question of the precision of timing. The GPS signal is entirely designed around precise timing, whereas Wifi isn't. There are a number of variables
by rkangel 7y ago
It's also a question of the precision of timing. The GPS signal is entirely designed around precise timing, whereas Wifi isn't. There are a number of variables like buffer lengths that can be measured around to some extent, but are never going to be as precise.
- vlovich123 7y agoJust using the very coarse RSSI signal Apple was getting 5-20m level accuracy depending on the venue 5 years ago & Google gets ~15m accuracy indoors worldwide (different mapping techniques). You're thinking at the software level though. Look up 802.11mc though - that enables cm-level mapping.