柱面共形阵列信源方位与极化状态的联合估计算法  

Joint estimation algorithm of 2D DOA and polarization based on cylindrical conformal array antenna

作　　者：张树银[1] 郭英[1] 齐子森[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《电波科学学报》2011年第6期1118-1125,共8页Chinese Journal of Radio Science

基　　金：国家自然科学基金(No.60601016);陕西省基础研究基金(No.2010JQ8003);陕西省电子信息系统综合集成重点实验室基金(201110Y10)

摘　　要：针对柱面共形极化敏感阵列的结构特点建立了其导向矢量模型,以此为基础实现了信源方位与极化状态的联合估计。根据旋转不变子空间思想估计俯仰角和子空间原理、秩损理论,通过对阵列流形矩阵进行特定的形式变换,将其中隐含的信源方位信息与极化信息"去耦合",分别利用一维角度搜索和方程求解实现了两者的准确估计。仿真实验证明了算法的有效性。A joint estimation algorithm of two dimensional directions of arrival（2D DOA） and polarization is investigated based on the modeling of cylindrical conformal array antenna.The elevation angle of incidence signal is estimated through estimation of signal parameters via rotational in variance techniques（ESPRIT） algorithm,and according to the subspace and rank-reduction estimator（RARE） theory,the direction information and polarization information are decoupled by certain transforming to the steering matrix,after which the azimuth angle and polarization are obtained respectively through dimensional angle search and solution of equations.Monte-Carlo simulation results verify the effectiveness of the proposed algorithm.

关 键 词：柱面共形阵列天线 参数联合估计 旋转不变子空间 极化敏感阵列 

分 类 号：TN911.7[电子电信—通信与信息系统]