Time format and absolute time when exporting data

[turboscholz]

I would recommend to “sync” your GPS device to a visible event on your smartphone, a certain gully cover or speed bump at a known position – or hit your smartphone at a certain point of interest…

Yes, I also thought about that. It might be a workaround.

One thing I wondered. In GPS measurements the actual time stamp of the signal is always know, at least I heard about that. Couldn't you use that data and combine it with the Accelerometer sensor data?