基于拉伸式双偶极子天线Q-MUSIC算法的DOA估计  

Quaternion MUSIC Algorithm for DOA Estimation with Stretched Dual Dipole Antennas

作　　者：计茹[1] 付泳 JI Ru;FU Yong

机构地区：[1]中国电子科技集团公司第二十研究所,西安710068 [2]火箭军驻燕山电子设备厂军代室,北京100192

出　　处：《现代导航》2017年第5期349-354,共6页Modern Navigation

摘　　要：本文指出在四元数模型下,传统双偶极子天线组成的均匀线阵(ULA)在利用四元数多重信号分类算法(Q-MUSIC)估计极化信号波达角(DOA)时,存在"模型相干"问题,并提出了基于实同构矩阵变换的拉伸式双偶极子天线MUSIC算法,有效解决了上述问题,所提算法充分利用四元数模型的正交性,性能远优越于基于传统双偶极子天线的MUSIC算法,尤其是在低信噪比(SNR)条件下。最后,通过计算机仿真实验验证了所提算法的有效性。This paper shows the problem of model of coherence in the quaternion model when using quaternion multiplesignal classification algorithm(Q-MUSIC)for the direction of arrival(DOA)of polarized signals estimation with uniform lineararray(ULA),which consists of dual dipole antennas,and solve the above problem effectively by proposing the real isomorphicmatrix transformation MUSIC algorithm with stretched dual dipole antennas.The proposed algorithm makes full use of theorthogonality of the quaternion model and has a superior performance to the existing Q-MUSIC algorithm based on the conventionaldual dipole antenna especially for low signal to noise ratio(SNR).Finally,the numerical simulations show the effectiveness of theproposed method.

关 键 词：四元数 双偶极子 模型相干 波达角 

分 类 号：TN957[电子电信—信号与信息处理]