一种改进的基于投影预变换 自适应波束形成器

在基于投影预变换的基础上，提出了一种改进的自适应波束形成算法，该方法改善了自适应波束形成过程中小期望信号的缺点，同时，提高了干扰源靠得较近时波束形成的稳健性，增强阵列输出SINR。此外，新算法具有空间平滑作用，在空间存在相关或者相干干扰时仍具有较好的干扰抑制性能和波束保形能力，计算机仿真结果说明了新算法的有效性。

Improved Adaptive Beamformer Based on Projection Pretransformation

Based on projection transformation,an improved adaptive beamforming via projection transformation is proposed. The advantage of the new beanformer are that it can further improve the lack of little desire signal in processing, and on the other hand, the novel method may upgrade the robustness in case of the closely spaced jamming sources,and thus raise the output signal to interference plus noise ratio. Additionally,the spatial smoothing can decorrelate in scenarios with partially correlated or fully coherent sources, and the method has the advantage of a better performance of jammer suppression and stronger ability to reshape the beam than projection transformation. The computer simulations demonstrate the effectiveness of the proposed method.