一种基于双通道空间谱估计结构的阵列幅相误差校正方法  

AN ARRAY GAIN-PHASE ERRORS CALIBRATION METHOD BASED ON DUAL-CHANNEL SPATIAL SPECTRUM ESTIMATION STRUCTURE

作　　者：唐歆 龚晓峰[1] 雒瑞森 Tang Xin;Gong Xiaofeng;Luo Ruisen(College of Electrical Engineering,Sichuan University,Chengdu 610065,Sichuan,China)

机构地区：[1]四川大学电气工程学院,四川成都610065

出　　处：《计算机应用与软件》2020年第10期286-289,299,共5页Computer Applications and Software

摘　　要：空间谱估计中经典MUSIC算法的实现结构带来的成本问题较大地制约了其在工程中的应用,同时实际阵列幅相误差也会对MUSIC算法的性能带来一定影响。针对该问题,提出一种简易的幅相误差有源校正方法,并将其用于权微扰双通道实现结构之中。利用校准源参数已知的特性,反向计算阵列参数进行校准;只需要单个信号源即可完成阵列幅相误差校正,且只需要两个接收通道来估计信号协方差矩阵。该方法在降低MUSIC实现结构成本的同时算法复杂度无明显提升。通过仿真实验证明了该方法的有效性。The cost problem caused by the implementation structure of the classical MUSIC algorithm in spatial spectrum estimation greatly restricts its application in engineering,and the actual array gain-phase errors will also have an impact on the performance of the MUSIC algorithm.In this regard,this paper proposes a simple gain-phase errors active calibration algorithm,which is used in the weighted perturbation dual-channel implementation structure.The method used the known characteristics of the calibration source parameters,calculated the array parameters in reverse direction.It only needed a single signal source to complete the array gain-phase error calibration,and only needed two receiving channels to estimate the signal covariance matrix.It reduces the cost of MUSIC implementation structure,while the algorithm complexity is not significantly improved.Simulation experiments show the effectiveness of this method.

关 键 词：空间谱估计 工程应用 双通道 幅相误差 有源校正 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]