In complex outdoor environments, during the landing process of drones, the target may be temporarily obstructed or out of view, leading to tracking failure. To enhance the accuracy and stability of unmanned aerial vehicle attitude control, a quadcopter unmanned aerial vehicle autonomous landing attitude control method based on tracking-learning-detection(TLD) algorithm is proposed. Combining extended Coleman filtering and TLD algorithm to detect specific targets and achieve target tracking through multiple median streams. By accurately capturing target position information, combined with additional inertia term crowd search algorithm and active disturbance rejection control technology, the selection of search step size and directional inertia coefficient was modified to optimize the flight attitude of quadcopter drones, improving the stability and safety of the landing process. The experimental results show that the average center offset of the proposed method is within 1.98 pixels, and the roll angle, pitch angle, and yaw angle the deviation is all within 0.02°, meet the expectations,the operation is smooth, the performance is better, ensuring the safe landing of the quadcopter drone.
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