中文摘要：

在均匀线性阵列和双平行线阵模型下，结合常规波束形成算法，一维子空间类算法和二维子空间类算法的原理，构建了阵元间互耦和通道幅相不一致的误差模型，系统性地分析了两种阵列误差对这些经典算法的作用机理，并进行了数值仿真验证。理论分析和仿真结果表明，互耦和通道不一致会对阵列流型产生扰动，并破坏旋转不变关系，使得经典算法估计性能严重下降，降低了估计成功概率。

英文摘要：

Using a uniform linear array and parallel linear array model,the error model of mutual coupling and channel discord is constituted. The mechanism that how two array errors affect conventional beam forming algorithm,one-dimensional subspace estimation algorithms and two -dimensional subspace estimation algorithms are analyzed,and then the simulation is proceeded. The analysis and simulation results show that the mutual coupling and channel discord can disturb steering matrix and destroy rotational invariance relationship. So,the performance of classical algorithms and the probability of success degrade substantially.