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- 2017
基于MNC-FastICA算法的稳健自适应波束形成
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Abstract:
针对导向向量失配的稳健自适应算法主要是基于导向向量不确定集约束，但是其约束参数往往难以确定，提出了基于修正的非圆复值快速不动点算法（MNC-FastICA）的波束形成方法，通过盲分离得到的分离矩阵来构造波束权向量，并对由此产生的信源幅相模糊进行校正。该方法不必预先估计信号来波方向，避免了传统方法中来波方向估计不准引起的期望信号的导向向量失配；对于阵列通道幅相误差导致的导向向量失配，该方法对其不敏感，不必对阵列进行校正。仿真实验与最差性能最佳化（WCPO）等经典方法作了性能对比，结果验证了该算法的有效性和稳健性。
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