从三正交偶极子天线接收信号中估计飞行器姿态参数

Aircraft Attitude/Heading Estimation Using a Dipole Triad Antenna

(Research Institute of Unmanned Aircraft, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)

Funds: null

摘要: 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。
- 三正交电偶极子天线 /
- 极化状态 /
- 波达方向 /
- 姿态估计
Abstract: This paper performs aircraft attitude/heading estimation using an airborne dipole triad antenna. The signal model is given with the parameters such as the wave Direction Of Arrival (DOA) and state of polarization. The algorithms for estimating the source DOA and electric ellipse orientation angle are presented along with their statistical performance analysis. From these parameters, the aircraft gesture angles about pitching, yawing, and rolling, which are needed by autopilot, are produced. Simulation results validate the proposed algorithms efficacy.
- Dipole triad antenna /
- State of polarization /
- Direction Of Arrival (DOA) /
- Attitude/Heading estimation