阵元间互耦和幅度/相位失配参数的联合估计  

Joint estimation of mutual coupling and amplitude/phase mismatch parameters among array sensors

作　　者：王磊[1] 戴旭初[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系,合肥230027

出　　处：《航天电子对抗》2005年第5期40-42,64,共4页Aerospace Electronic Warfare

摘　　要：针对阵列信号处理中存在的阵元间互耦和阵元幅度/相位失配的问题,提出了一种适用于任意阵列结构的估计算法。该算法使用一个辅助信号源,从不同方向分时发射信号,发射方向的个数决定于阵列中的阵元个数。算法能够利用信号子空间与噪声子空间的正交特性同时求解阵元间互耦系数和阵元幅度/相位失配参数。计算机仿真实验结果证明了该算法的正确性和有效性。The performance of array signal processing is severely impaired by the mutual coupling and amplitude/phase mismatch among array sensors. A method suitable for any array is proposed to solve the problem,which uses only one auxiliary signal source to transmit from different directions in different time and the number of the directions is determined by the number of array sensors. The method can synchronously give parameters of the mutual coupling and amplitude/phase mismatch based on the orthogonal characteristic between the signal subspace and noise subspace. Computer simulation results show the method is correct and effective.

关 键 词：阵列信号处理 特征空间分解 互耦 阵元幅度/相位失配 

分 类 号：TN911.7[电子电信—通信与信息系统] TN975[电子电信—信息与通信工程]