均匀圆形阵列互耦系数的测量与校正

Measurement and Calibration of Mutual Coupling Coefficient for Uniform Circular Array

提出了一种利用一个辅助源估计均匀圆阵互耦系数的算法。该算法首先基于ILSP算法求出包含互耦系数信息的信号子空间向量,然后根据互耦系数矩阵与理想阵列流型之间的转换公式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的全部独立元素。求出这个列向量后就可以恢复出整个互耦系数矩阵。仿真结果证明了本文算法的正确性。

This paper presented a mutual coupling calibration algorithm that needs one assistant source for uniform circular array. Based on iterative least squares projection algorithm, signal subspace vector including information of mutual coupling coefficient is presented. In accordance with transform formula between mutual coupling coefficient matrix and perfect array manifold, independent elements in mutual coupling matrix can be expressed as line vector. The mutual coupling coefficient matrix can be obtained by the line vector. Simulations demonstrated accuracy of the algorithm.