单电磁矢量传感器DOA和极化的同时估计

Uni-Vector-Sensor DOA and Polarization Estimation

针对单个电磁矢量传感器,提出基于四阶累积量的极化域虚拟ESPRIT二维波达方向(DOA)和极化参数同时估计算法。该方法借助累积量操作提取信号在极化域的旋转不变结构,并利用虚拟ESPRIT方法同时估计信号的二维DOA和极化参数,它可以分辨多个极化域可分的非高斯信号。给出的仿真结果验证了算法的可行性和有效性。

This paper shows how to use virtual ESPRIT incorporated with cumulants manipulation for two-dimensional DOA and polarization estimation based on one vector sensor. In the method, ESPRIT matrix pencil in cumulants domain is first constructed, then the virtual ESPRIT is used to recover the polarization- angular coherence structure (PACS) and the corresponding rotational matrix dependents on signal polarizations. Lastly, cross product methods is performed on the aquired PACS to estimate 2-D DOA unambiguously. Simulation results are also given to validate the present method.