圆形极化阵列到达角和极化参数估计

为了放宽布阵条件，解决现有方法存在的相位模糊问题，采用旋转不变信号谱估计算法研究了基于均匀圆形极化阵列的信号参数估计。利用子空间理论，并根据导向矢量的特点得到相邻阵元间的相位差估计，消除了相位模糊；利用沿z轴方向放置的电偶极子阵列导向矢量和磁偶极子阵列导向矢量之间的关系，通过矩阵运算给出了信号极化和到达角估计的最小二乘解，该算法不需要搜索运算和参数配对运算，仿真实验结果验证了该算法的有效性。

Direction of Arrival and Polarization Estimation with a Polarized Circular Array

In order to relax the embattle conditions and solve the phase ambiguity of existing algorithm, a signal parameter estimation algorithm based on the polarized uniform circular polarized array was studied using the estimating signal parameters via rotational invariance techniques ( ESPRIT ) algorithm. The phase differences between two adjacent array elements are obtained based on the performance of steering vector using the subspace theory, the phase ambiguity is resolved. Using the relationship of array mani-fold vector between z-axis electric dipoles and magnetic dipoles, the least squares solution to the signal polarization and direction of arrival estimations were given with matrix operations without spectral peak searching and parameter matching. Simulations verify the effectiveness of the algorithm.