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Aircraft
Phantom 4 Pro / Pro+ Series User Manual
©
2020 DJI All Rights Reserved.
27
Vision System and Infrared Sensing System
The main components of the Vision System are located on the front, rear and bottom of the Phantom 4
Pro / Pro+, including [1] [2] [3] three stereo vision sensors and [4] two ultrasonic sensors. The Vision Sys-
tem uses ultrasound and image data to help the aircraft maintain its current position, enabling precision
hovering indoors or in environments where a GPS signal is not available. The Vision System constantly
scans for obstacles, allowing the Phantom 4 Pro / Pro+ to avoid them by going over, around, or hovering.
The Infrared Sensing System consists [5] of two 3D infrared modules on both sides of the aircraft. These
scan for obstacles on both sides of the aircraft and is active in certain ight modes.
It is important that you only fly in conditions where the Vision Position System can function
correctly; otherwise the Terrain Follow Mode will not work.
Detection Range
The detection range of the Vision System and Infrared Sensing System are depicted as follow. Note that
the aircraft cannot sense and avoid the obstacles that are not within the detection range.
In P-mode, both the forward and the rear Vision Systems work if the speed is within 13mph
(22kph). At higher speeds, only the vision system facing the direction of travel is active.
[2]
[3]
[4]
[1]
[5]
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