基于匹配处理的相控阵数字波束形成方法

在大孔径宽扫描角相控阵情况下，利用窄带相控阵不能形成宽带高分辨信号，提出一种基于匹配处理的宽带宽角相控阵数字波束形成方法。该方法采用时域数字处理，将宽带信号经匹配处理后变换到数字域，在窄带条件下进行数字波束形成。理论分析和仿真结果验证了其有效性。与实时延迟线波束形成方法和频域DFT波束形成方法相比，基于匹配处理的相控阵波束形成方法既不需要延时器和移相器，也不需要高速A／D转换器和高速数字信号处理，所需设备量少，易于工程实现。

Wideband Digital Beamforming for Phased Array Based on Match Processing in the Presence of Large Scan Angle

Theoretical analysis demonstrates that wideband signal can not be formed by using narrowband phased array in scenarios with large aperture and wide scan angle. A wideband digital beamforming method for phased array based on match processing in the presence of large scan angle are proposed. The novel method employs digital processing in the time domain. It is correct by analysis and simulation. Compared with the beamforming method using delay lines in time domain and the beamforming technique with DFT in frequency domain, the method demands smaller number of equipment and are easy to be implemented.