The DJI Phantom 4 Downward Vision Positioning Module allows the drone to maintain a stable hover and navigate accurately in GPS-denied environments. It uses a combination of ultrasonic sensors and cameras to detect the ground and its distance from the drone, providing essential data for the flight controller to adjust the drone's position.
This module is particularly useful for indoor flight or flying close to the ground, where GPS signals may be weak or unavailable. It enables features like precision landing and obstacle avoidance, enhancing the safety and ease of flying the Phantom 4. Additionally, it contributes to smoother footage by keeping the drone steady during hovering and low-altitude maneuvers.