多径条件下基于WSF的均匀圆阵幅相误差自校正  

UCA Gain/Phase Self-calibration in Presence of Multipath Based on Weighted Subspace Fitting

作　　者：陈德莉[1] 卢焕章[1] 张聪[1] 

机构地区：[1]国防科技大学电子科学与工程学院ATR重点实验室,湖南长沙410073

出　　处：《系统仿真学报》2008年第17期4563-4566,4573,共5页Journal of System Simulation

摘　　要：针对多径干扰情况下的均匀圆阵幅相误差校正问题,分析了模式变换法不适用的原因,并基于加权子空间拟合的思想构造了一个拟合函数,通过交替优化和高斯-牛顿算法实现了多径条件下均匀圆阵幅相误差的自校正,仿真结果表明该算法具有优良的方位估计和校正性能。The reason why the phase mode excitation is not fit for the calibration of the uniform circular array＇s gain/phase errors in the presence of multipath was analyzed. Based on the idea underlying weighted subspace fitting scheme for DOA estimation, a fitting function was constructed to achieve favorable UCA self-calibration in the presence of multipath. Simulation results using alternating optimization and Gauss-Newton algorithm were provided to demonstrate the proposed algorithm＇s effectiveness of DOA estimation and calibration.

关 键 词：阵列校正 加权子空间拟合 幅相误差 均匀圆阵 

分 类 号：TN95[电子电信—信号与信息处理]