柱面共形阵列天线的极化-DOA估计  

Polarization-DOA Estimation for Cylindrical Conformal Array Antenna

作　　者：彭文灿[1] 魏江[1] 瞿颜[1] 郭陈江[1] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710129

出　　处：《计算机仿真》2013年第9期173-176,207,共5页Computer Simulation

基　　金：西北工业大学研究生创业种子基金项目(Z2012072)

摘　　要：共形阵列受共形载体曲率的影响,呈现多极化特性,在共形阵列天线的波达方向(direction of arrival,DOA)估计的研究中考虑信号的极化参数就显得非常重要,现有共形阵列下空间超分辨率算法常缺失对信号极化参数的估计。针对柱面共形阵列的多极化特性,建立含有入射信号极化参数的柱面共形天线的导向矢量模型,结合MUSIC(multiple signal classification)算法实现了入射信号的极化参数与二维波达方向的联合估计,对阵列形式无特殊要求,不需要参数配对。仿真结果表明,改进方法能有效应用于柱面共形阵的DOA估计,并提高了信号的分辨率。Conformal array antenna has polarization diversity,which is caused by the curvature of conformal carrier.It is important to contain polarization parameter of incident signals in the study of direction of arrival（DOA） of incident sources.However,the spatial super-resolution algorithm based on conformal array is short of the polarization parameter estimation.Aiming at the polarization diversity of cylindrical confonnal array,an array manifold model for cylindrical conformal array was established with polarization parameters of incident signals,combined with the multiple signal classification （MUSIC） algorithm,to realize polarization and 2D direction of arrival estimation of the sources.The algorithm has less restriction on array distribution and is needless for parameter association.Simulation results demonstrate that this method can be efficiently used in cylindrical conformal array for DOA estimation and readily be extended to other curve conformal arrays.

关 键 词：柱面共形阵列天线 极化 波达方向 

分 类 号：TN911.7[电子电信—通信与信息系统]