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19
Phantom 4 RTK User Manual
Landing Protection Function
Landing Protection will activate during auto landing.
1. Landing Protection determines whether the ground is suitable for landing. If so, the aircraft will land
gently.
2. If Landing Protection determines that the ground is not suitable for landing, the aircraft will hover and
wait for pilot conrmation. The aircraft will hover if it detects the ground is not appropriate for landing
even with a critically low battery warning. Only when the battery level decreases to 0% will the aircraft
land. Users retain control of aircraft ight orientation.
3. If Landing Protection is inactive, the DJI GS RTK app will display a landing prompt when the aircraft
descends below 0.3 meters. Tap to conrm or pull down the control stick for 2 seconds to land when
the environment is appropriate for landing.
Obstacle Avoidance During RTH
Aircraft can now sense and actively attempt to avoid obstacles during RTH, provided that the lighting
conditions are adequate for the Forward Vision System. Upon detecting an obstacle, the aircraft will act as
follows:
1. The aircraft will use the primary camera to identify obstacles as far as 984 feet (300 meters) in front,
allowing it to plan a safe route home.
2. The aircraft decelerates when an obstacle is sensed at 49 feet (15 meters) ahead.
3. The aircraft stops and hovers then starts ascending vertically to avoid the obstacle. Eventually, the
aircraft will stop climbing when it is at least 16 feet (5 meters) above the detected obstacle.
4. Failsafe RTH procedure resumes, the aircraft will continue ying to the Home Point at the current altitude.
The Obstacle Sensing function is disabled during RTH descent. Operate with care.
To ensure the aircraft returns home forwards, it cannot rotate during RTH while the Forward Vision
System is enabled.
The aircraft cannot avoid obstacles above, beside, or behind the aircraft.
5 meters
15 meters
300 meters
•
Landing Protection will not be active in the following circumstances:
a
)
When the user is controlling the pitch/roll/throttle sticks (Landing ground detection will re-activate
when control sticks are not in use)
b
)
When the positioning system is not fully functional (e.g. drift position error)
c
)
When the Downward Vision System needs re-calibration
d
)
When light conditions are not sucient for the Downward Vision System
• If an obstacle is within 1-meter of the aircraft, the aircraft will descend to 0.3m above the ground
and hover. The aircraft will land upon with user conrmation.
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