Hi, I’m new to missions and have been looking into the new mission hub.
I’m just wondering about the altitude mode in relation to the flight simulator.
Could anyone tell me if it be the case that the real flight test would be accurate to the simulator if the altitude mode was to “above ground”, but not “above take off”
Im just planning a simple test flight to do an orbit around my local castle, which is on a hill.
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The simulation will be accurate regardless of altitude mode used. What matters is that you take off from a location where the ground elevation is the same as waypoint 1’s ground elevation. The suggestion is to take off at the location of the first waypoint.
Alright, but shouldn’t i be able to take off anywhere, regardless of elevation when set to above ground, then i fly near waypoint 1 and start it, it would go to the approximate altitude above ground that i set?
That will only work if the location of take off has the same ground elevation as the 1st waypoint. The Hub always makes that assumption currently
DJI drones “zero” the altitude when the drone is powered on. Then, barometric pressure is used to estimate the current altitude when flying. As a result, a DJI drone will only ever know its height relative to the power-on location.
When using Litchi’s “Above Ground” option, the ground elevation under each waypoint, in conjunction with the specified above-ground height, is used to determine what the drone’s (barometric) height should be to provide that above-ground height.
This process only works if the power-on / take-off location is at the same elevation as the ground under waypoint number 1.