北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2005, Vol. 28 ›› Issue (3): 14-16.doi: 10.13190/jbupt.200503.14.chengchy

• 论文 • 上一篇    下一篇

一种新的均匀圆阵互耦校正算法

程春悦,吕英华   

  1. 北京邮电大学 继续教育学院, 北京 100876
  • 出版日期:2005-06-28 发布日期:2005-06-28

A New Mutual Coupling Calibration Algorithm for Uniform Circular Array

CHENG Chunyue, LV Yinghua   

  1. School of Continuing Education, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Online:2005-06-28 Published:2005-06-28

摘要:

提出了一种估计均匀圆阵互耦系数的算法. 该算法首先将包含互耦系数信息的信号子空间向量表示为互耦系数矩阵和理想阵列导引向量的乘积. 然后,对互耦系数矩阵进行变换,进而用一个列向量表示出互耦系数矩阵中的全部独立元素; 并提出了基于最小条件数准则下对矩阵求逆从而给出此列向量的估计. 仿真证明了该方法可以准确估计互耦系数矩阵,并对小误差微扰具有一定稳定性.

关键词: 均匀圆阵, 互耦, 条件数; 校正算法

Abstract:

A new mutual coupling calibration algorithm is presented to estimate the mutual coupling coefficients of uniform circular array. Firstly, the signal subspace vector including information of mutual coupling coefficients is expressed as product of mutual coupling coefficient matrix and perfect array steering vector. In accordance with transform formula between mutual coupling coefficient matrix and perfect array steering vector, the independent elements in mutual coupling coefficient matrix can be expressed as a column vector. Based on least condition number rule, the column vector is given by the matrix inversion. Simulations demonstrate accuracy for estimation of the mutual coupling coefficient matrix and the stability for error perturbation of the algorithm.

Key words: uniform circular array, mutual coupling, condition number, calibration algorithm

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