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来自基站的极化电磁波包含的波达方向和极化状态信息,能建立飞行器姿态与大地坐标系的联系,因此利用机载三正交偶极子天线接收信号可以估计飞行器的姿态。该文研究了在只有一个基站信号和飞行器上单一接收点的条件下,如何实现飞行器的姿态感知,并推导了飞行器姿态估计算法。该文首先研究了估计波达角和极化椭圆倾斜角的算法,并分析了参数估计的性能,然后利用这些参数推算出飞行器的俯仰角、航向和横滚角,从而获得对飞行器进行控制的必要姿态信息。最后通过仿真实验验证了该方法的有效性。
The polarization direction and polarization state information contained in the polarized electromagnetic wave from the base station can establish the relationship between the attitude of the aircraft and the earth coordinate system. Therefore, the attitude of the aircraft can be estimated by using the signal received by the airborne three orthogonal dipole antenna. This paper studies how to realize the attitude perception of the aircraft under the condition that there is only one base station signal and a single receiving point on the aircraft, and the attitude estimation algorithm of the aircraft is derived. In this paper, the algorithm of estimating the angle of arrival of DOA and the angle of polarization ellipse is firstly studied and the performance of parameter estimation is analyzed. Then the pitch angle, course and roll angle of the aircraft are deduced by these parameters to obtain the control of the aircraft Necessary gesture information. Finally, the effectiveness of this method is verified by simulation experiments.