16 Chapter 2 Flight Safety
Visual Obstacle Avoidance Function
The visual obstacle avoidance function is suitable for scenarios where the aircraft flies in a well-
lit environment and encounters obstacles that are not too sparse during the flight, such as
sparse fine wire meshes or small branches at the outer edges of trees. Additionally, due to inertia,
the aircraft needs to brake at an effective distance under control. The flight control system limits
the aircraft's attitude angle to no more than 30° and the maximum flight speed to less than 15
meters per second during deceleration. For more information, see “6.5.2 OA Settings” in Chapter
6.
The obstacle avoidance function of the aircraft cannot be enabled in Ludicrous mode.
Precautions for Using Obstacle Avoidance Systems
The measurement accuracy of the visual sensing system is easily affected by factors such as light
intensity and object surface texture. Exercise caution when using the visual sensing system in
the following scenarios:
Flying over pure-colored surfaces (e.g., pure white, pure black, pure red, and pure green) and
low-texture surfaces.
Flying over surfaces with strong reflections.
Flying over moving objects (e.g., crowds, swaying reeds, bushes, and grasses).
Flying over water surfaces or transparent object surfaces.
Flying in environments with rapid and intense changes in lighting or direct exposure to strong
light sources.
Flying over extremely dim (with light intensity of less than 15 lux) or extremely bright object
surfaces.
Flying over small obstacles (e.g., iron wires, electric wires, and tree branches).
Lenses contamination (e.g., water droplets and fingerprints).
Flying in low-visibility conditions (e.g., heavy fog and heavy snow).
Flying at an altitude below 2 meters with a very fast flight speed.
The millimeter-wave radar sensing system operates as an auxiliary enhancement system for
visual obstacle avoidance and can work continuously throughout the day.
Please be noted that when flying in low-light conditions (such as at night), the aircraft's
visual perception system is affected, so the obstacle avoidance is not working.
If you need to fly in low-light conditions (such as at night), please confirm that the aircraft
is 60 GHz version with downward millimeter-wave radar (aircraft with the 24 GHz version
of downward radar does not have nighttime millimeter-wave obstacle avoidance
capability). Additionally, please operate cautiously in nighttime flights, as in the nighttime
obstacle avoidance is not 100% functional. It is recommended to fly in open areas.