信号DOA和极化信息联合估计的降维四元数MUSIC方法  

The Dimension Reduction Quaternion MUSIC Algorithm for Jointly Estimating DOA and Polarization

作　　者：李京书[1] 陶建武[1] 

机构地区：[1]空军航空大学控制工程系,长春130022

出　　处：《电子与信息学报》2011年第1期106-111,共6页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(60872088)资助课题

摘　　要：基于简化电磁矢量传感器阵列,该文提出了一种新的降维四元数MUSIC估计方法。文中引用了四元数的概念,利用四元数的正交特性能够很好地描述矢量传感器阵元的正交结构这一优点,建立了电磁矢量传感器阵列的四元数模型,利用降维Q-MUSIC(Quaternion-MUSIC)方法先对极化信号DOA进行估计,通过已经估计出来的DOA信息,再借助传统的V-MUSIC(long-MUSIC)方法估计极化信息。从而依次获得极化信号的4个参数。仿真实验验证了算法的可行性。Based on simplified electromagnetic vector-sensor array,a new Dimension Reduction Quaternion MUSIC（DR-QMUSIC） algorithm is proposed.In this paper,the quaternion algebra is first introduced since the orthogonality of quaternion is suitable for describing the orthogonal structure of electromagnetic vector-sensor very well.Then,the quaternion model of simplified electromagnetic vector-sensor array is established,and the DOA of polarized signals is estimated by employing the DR-QMUSIC algorithm.Inserting the estimated DOA into the traditional V-MUSIC algorithm,the polarization parameters of polarized signals are estimated.Thus,four unknown parameters of polarized signals are obtained.The simulation experiments are given to validate the proposed algorithm.

关 键 词：简化矢量传感器 降维Q-MUSIC 波达方向 四元数 

分 类 号：TN911.7[电子电信—通信与信息系统]