Aiming at the security risk of the unauthorized rejected UAV in the restricted flying area, and the problem that it is difficult to counter, this paper proposes an algorithm to use a UAV to intercept the unlicensed and uninformed UAV at high speed. Our algorithm uses a navigation and control architecture to solve this problem. In the aspect of navigation, low-cost omnidirectional perception was realized through the combination of camera and laser radar. Through the fusion of high precision and low frequency lidar data and high frequency and low precision vision data, accurate target position estimation and tracking are obtained. In the control aspect, the dynamic authority allocation control method based on trajectory prediction is used to realize the effective countermeasures against the large maneuvering UAV. Finally, the effectiveness of the proposed algorithm is verified by experiments and simulations. It is verified that the proposed algorithm can lock the denied UAV with a success rate of more than 90% and intercept the UAV with a success rate of more than 85%.
在数据融合实验中,本文采用10 s、30 Hz的螺旋曲线模拟无人机机动,摄像头定位误差通过向真实数据添加均值10 cm 的高斯噪声实现;激光雷达定位误差通过向真实数据添加均值 1 cm 的高斯噪声实现。。图5展示了带误差的由摄像头解算的目标位置与位置估计后的目标运动曲线,可见其数据平滑,接近目标真实运动轨迹,数据融合算法收敛,且具有准确性。图6展示了序列化融合估计处理后对整体估计性能的提升,估计精度大约提高了30%。
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