"Height" help

[Flash Grundelore]

I live on the side of a steep mountain just below the top.
If I set my geolocation and RTH info out in my driveway and then fly out off the side of the mountain where the ground drops away [like 150' drop in 300'], how does the Mini sense it's "height"?

If I flew out even a 1/4 mile it would actually be at about 1500'+ relative to real ground level...
Similarly, if I go "back" over the mountain the ground is going to be rising steadily... My RTH height [of say 125' driveway relative] is going to take it right into the tree canopy.

 

[netsonic]

how does the Mini sense it's "height"?

It does not sense it. The height is relative to the take off point, it will not reassess it, if you go over a cliff. Similar for the RTH, the altitude is relative to the take off point.

 

[Moose1967]

It does not sense it. The height is relative to the take off point, it will not reassess it, if you go over a cliff. Similar for the RTH, the altitude is relative to the take off point.

I am just going to add to netsonic's post in that the height is relative to the take off spot or home point - if you are part way thru a flight and land at another location (other than the initial recorded home point) mid flight, your drone height will then revert to that new spot you landed at - I know this as I tried it the other day - I have two big fields - took off from the first one and landed on my drone landing strip in my next field up the mountain - when I took off it asked me if I wanted to update my new home point and I told it "no" but at the same time I noticed the height went from 38 meters to 0 - food for thought !!!