Please select Into the mobile phone version | Continue to access the computer ver.
Technical question How does the Mavic pro know how fast it goes?
252 3 2019-3-14
Uploading and Loding Picture ...(0/1)
o(^-^)o
fans825c0532
lvl.4
Flight distance : 124193 ft
Hong Kong
Offline

Just curious if there are any engineers out there who are understanding of the technical aspects of the Mavic pro (2)
Wondering what is it that helps the mavic know how fast it is going?
Is it the GPS? the sensors? what are the technical aspects of the aircraft that help me gauge its speed?

Anybody have an idea?
2019-3-14
Use props
integer
Captain
Flight distance : 72488714 ft
Greece
Offline

I think is gps
2019-3-15
Use props
Paul_IA
Captain
Flight distance : 4603307 ft
United States
Offline

Pretty common GPS calculation: d=st, where d(distance), s(speed), t(time)
2019-3-15
Use props
JJB*
Captain
Flight distance : 2790502 ft
Netherlands
Offline

Not sure but speed along the X, Y and z axis is measured. (well, there are values for in the files)
In the flightlog is the speed given, this speed (m/s) is the same as when calculated from the X Y values.
But they are not always the same.....
Result of the X and Y calculaltion is the moving speed, wich is almost the same as the speed caluclated from LatLon data versus time.
But not always the same....

When errors (yaw, compass, imu etc) are present the speed indication (so the calculation) is not correct anymore, even when the GPS data is available and correct but not used.

So i think that DJI don`t use GPS data for their speed indication, so if not HOW they measure speed??

cheers
JJB
2019-3-15
Use props
Advanced
You need to log in before you can reply Login | Register now

Credit Rules