锥面共形阵列相干源DOA和极化参数的联合估计算法

针对共形阵列中的多参数联合估计问题，用交叉电偶极子对天线单元在锥面共形载体上构造极化敏感阵列并建立了快拍数据模型，在此基础上提出一种适用于相干源的多参数联合估计算法。该算法充分挖掘阵列中隐含的多个空域旋转不变结构，首先通过空间平滑预处理恢复子阵协方差矩阵的秩，实现信源的解相干，然后根据旋转不变子空间思想完成多个相干信源二维到达角和极化参数的联合估计。Monte Carlo仿真结果表明了算法的有效性。

DOA and Polarization Estimation Algorithm for Coherent Signals with Conical Conformal Array

A polarization sensitive array is formed by crossed dipole elements on the surface of conical carrier and its snapshot data model is built in this paper.On this basis,a joint multi-parameter estimation algorithm for two dimensional direction of arrival(2D DOA) and polarization is proposed.In this algorithm,de-coherence preprocessing is performed through spatial smoothing for the covariance matrixes of the sub-array data by employing the redundant spatial coherence structure potentially involved,then the 2D DOA and polarization parameter estimation for multiple coherent sources is performed according to ESPRIT algorithm.Monte Carlo simulation results show that the proposed algorithm is effective to solve the multiple parameter estimation problems with conformal array antenna.