The eigenspace-based beamforming(ESB) algorithm is a commonly used adaptive beamforming algorithm and most ESB methods available in published literature have been designed under the assumption that the direction of the desired signal can be known exactly.

• 基于特征空间波束形成算法(ESB)是常用的一种自适应波束形成算法,已提出的ESB算法大多假设期望信号方向精确已知。