基于阵列协方差矩阵特征分解的测向技术,在天线阵各通道特性不一致时,其性能会急剧下降。本文提出了一种校准非线性阵列各通道增益和相位不一致性的新方法,即利用两个未知精确方向校准信号源的信号,分别作特征分解处理,然后通过用迭代算法求解非线性方程组以估计各通道的增益和相位因子。模拟结果表明,本文的方法是成功的。 The DF based on the array covariance matrix eigendecomposition can dramatically decrease the performance of antenna array when the characteristics of each channel are different. In this paper, a new method to calibrate the gain and phase inconsistency of each channel in a non-linear array is proposed. By using the signals of two unknown accurate direction calibration sources, the new method is used to decompose the signals respectively, then the iterative algorithm is used to solve the nonlinear equations Estimate the gain and phase factors for each channel. The simulation results show that the method in this paper is successful.