4 ms·
Altitude measurements. My (standalone) GPS 10 years ago had it as one of its main features. The extra hardware needed on a phone can't be that much.
by PanMan 14y ago
Altitude measurements. My (standalone) GPS 10 years ago had it as one of its main features. The extra hardware needed on a phone can't be that much.
- mikeash 14y agoGPS gives you altitude already, no need for a barometer. It's not hugely accurate, but it's more accurate than an uncalibrated altimeter.
- PanMan 14y agobut a properly calibrated barometer is WAY more accurate than GPS. 10 years ago I could track a two meters offset (that's the difference between your head and your feet!).
- mikeash 14y agoIndeed, but I can't think of any way to calibrate the thing other than looking up your location and pulling down weather data, or simply forcing the user to put in an altimeter setting.