This page does: http://wiki.openmoko.org/wiki/Accelerometer_Fundamentals
Noise is around 3cm/s^2, i.e: " It can fill in _short_ - 3-5s gaps in GPS coverage, if the orientation of the phone is known. " Helge Hafting wrote: > Hendrik Siedelmann wrote: > >> Get higher gps accuracy using accelerometer data (or use it when driving >> through a tunnel) would be a nice example. >> > That'd be interesting. Do anyone know the precision of the > accelerometers? Assuming, of course, that one has a car mount so the > phone has a known orientation relative to the car. How long tunnels > would be feasible? Where I live, there are some 4km tunnels that curve > slightly, and a shorter one with a roundabout inside. :-/ > > Usually, one also uses the car speedometer for this. I have a box that > converts this to serial - perhaps a serial to usb converter could be > used to connect the phone. > > > > Helge Hafting > > _______________________________________________ > Openmoko community mailing list > [email protected] > http://lists.openmoko.org/mailman/listinfo/community -- Gunnar Aastrand Grimnes gunnar.grimnes [AT] dfki.de DFKI GmbH Knowledge Management Trippstadter Strasse 122 D-67663 Kaiserslautern Germany Office: +49 631 205 75-117 Mobile: +49 177 277 4397 _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
