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.
出处
《航天电子对抗》
2005年第5期40-42,64,共4页
Aerospace Electronic Warfare
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
array signal processing
eigenspace decomposition
mutual coupling
array sensor amplitude/phase mismatch
