基于色噪声背景下的自适应波束形成研究

Study on Adaptive Beam-forming based on Colored Noise

色噪声环境下自适应波束形成技术能有效适应阵列天线系统的实际应用场景。首先分析了色噪声环境下自适应波束形成技术性能,重点研究了有限次快拍下自适应波束畸变产生的原因,其次,在已知噪声协方差情况下,通过对噪声相关矩阵的改进设计,降低了色噪声协方差矩阵对自适应波束形成影响。计算机模拟仿真结果表明:提出的自适应波束形成算法在色噪声环境下具有较好的波束保形能力。

Adaptive beam-forming based on the colored noise could be effectively applied to the actual antenna array system. The effect of colored noise on adaptive beam-forming is studied, including the reasons in causing beam-forming aberration. With the known noisy covariance, the design of noise-correlated matrix is improved, and the performance of adaptive beam-forming thus becomes much better. The computer simulation indicate that the proposed beam-forming algorithm is fairly robust in adaptive beam-forming.