Hello DJI Forum,

A small question, just to verify if this is normal or not...

When I make a departure with the drone, the actual height measurement is 0.0 meter.
When I fly for a while (a few minutes is enough), I notice that the actual height from the ground level is moving in negative direction...

This means when I fly 1 meter above ground, the height measurement is displaying a value of -5.0 meters...

When landing, I am on -6.0 meters, and as soon as the drone is landed, the actual value is reset to 0.0 meters.

Did anybody notice this behavior also ?  Is this normal or what is causing this zero point shift..?


Curious and thanks for any feedback,


KDP

The height is derived from measurement of air pressure.
It's normal for it to vary by a few feet over the time of a flight.
Six metres is a bit much, recalibrating the IMU might help make the variation a little better.

Pretty common on the M2 and M1.  Its likely the barometer isnt temperature compensated (or properly) and after a long or hot flight the point can easily by up to 6m lower than it was when you took off.
If you do a 2nd flight immediately the same doesnt happen so it looks temperature related.

Ooh, OK.... I thought it was working via GPS-signals also...

Thanks for your feedback !

KDP + Posted at 5-18 23:56
Ooh, OK.... I thought it was working via GPS-signals also...

Thanks for your feedback !

EXIF will have GPS altitude but its a lot less accurate than a barometer (and obviously only work with a GPS signal of good quality).