Indeed. When you taxi an airplane on the ground in a straight live or drive a car in a straight line, GPS TRACK (adjusted for magnetic declination) = Magnetic Heading.
The other complementary magnetometer calibration techniques involve driving around in a full circle in about 60 to 75 seconds or doing a 360 degree turn and stopping every 30 degrees. -Pascal Sent from my iPhone > On May 11, 2014, at 4:47 AM, "Jake" <jak...@rommel.stw.uni-erlangen.de> wrote: > >> On 05/11/2014 07:08 AM, joerg Reisenweber wrote: >>> On Sat 10 May 2014 11:57:30 Pascal Gosselin wrote: >>> calibrate the compass via GPS track by an easy calibration or >>> self-calibration method >> >> GPS doesn't offer any data to calibrate magnetometer from. >> magnetometer aka compass is about orientation of device, GPS is >> about position and movement vector. They are 100% unrelated. > > In a static situation this is correct, but while moving it is possible > to get the current heading from GPS. > > Jake > > _______________________________________________ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community