dji Mavic 3M - Page 86

DJI Mavic 3M User Manual
86
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4. Power off the aircraft after the task is completed. Remove the microSD card from the
aircraft, and connect it to the computer to check the taken photos and the generated
files.
• When using Area Route and Linear Route, the default camera focus mode is MF infinity,
and the distortion correction is disabled.
• During an orthophoto operation, it is recommended to adjust the flight route speed to
the maximum value and enable elevation optimization.
The route parameters are described as follows:
Specifications Description
Ortho GSD
Ortho GSD is the ground sampling distance of the orthophotos
taken on the first route, i.e., the distance between two consecutive
pixel centers measured on the ground. The larger the Ortho GSD
value, the lower the resolution of the orthophotos. The flight route
altitude will be changed accordingly when changing the Ortho GSD
value.
Altitude Mode
The starting plane of the flight route altitude.
•
Relative to Takeoff Point (ALT): the altitude of the aircraft relative
to the takeoff point. It is recommended to use this option for
aerial mapping operations. Then, Target Surface to Takeoff Point
will appear. Target Surface to Takeoff Point = the altitude of the
target surface - the altitude of the take-off point.
•
ASL (EGM96): the altitude of the aircraft relative to the EGM96
geoid. Flight Route to Target Surface will appear. Flight Route to
Target Surface = the altitude of the flight route - the altitude of
the target surface.
•
AGL: Altitude above Ground Level, which is the altitude of the
aircraft relative to the ground below. Terrain Follow Altitude will
appear.
Flight Route Altitude
The altitude of the flight route of a flight task. Different altitude
modes have different starting planes for the flight route altitude.
The Ortho GSD value will be changed accordingly when changing the
flight route altitude.
Safe Takeoff Altitude
After taking off, the aircraft will fly up to the safe takeoff altitude
(relative to the takeoff point), then fly to the start point of the flight
route.
Safe Takeoff Altitude is effective only when the aircraft executes
a flight task before takeoff. If the aircraft starts to execute a flight
task after takeoff, the safe takeoff altitude will not be effective.
Speed
The operating speed of the aircraft after entering the flight route.
This speed is related to the GSD and the frontal overlap ratio.