利用飞控特征的四旋翼无人机雷达回波信号仿真

针对现有旋翼无人机雷达回波信号仿真方法未将密切相关的机身速度与旋翼转速相关联的问题,本文利用旋翼无人机的飞控特征,提出了一种将机身运动与旋翼转速相结合的四旋翼无人机雷达回波信号仿真方法.首先根据雷达回波仿真所需参数利用四旋翼无人机飞控原理给出一种机身速度与旋翼转速关联的简化运动模型,其次推导并给出线性调频体制雷达四旋翼...

Radar Echoes Simulation of the Quadrotor Drone Utilizing Flight Control Characteristics

Aiming at the problem that the existing radar echoes simulation method of rotor drones does not correlate the closely related drone body speed with the rotors rotation speed, a quadrotor drone radar echoes signal simulation method utilizing flight control characteristics which combines the drone body motion with the rotors rotation speed is proposed. Firstly, according to the parameters required for radar echoes simulation, a simplified motion model associating the drone body speed with the rotors rotation speed is given using the flight control principle of the quadrotor drone. Then a radar echoes signal model of the quadrotor drone for the linear frequency modulated radar is deduced and given. Finally, the simplified motion model and the radar echoes signal model are combined employing the coordinate system conversion. The experiment results show that the time frequency analysis results of simulated echoes signals can reflect the micro-Doppler characteristics related to the speed of the drone body and the rotors rotation speed, and it is necessary to consider relation of the drone body speed and the rotors rotation speed in the radar echoes simulation when the drone motion state varies.