线阵双基地声纳波束零点形成MUSIC算法

以线阵为双基地声纳接收基地阵列流形,提出了一种基于多信号分类(MUSIC)技术的波束零点形成算法。算法可在屏蔽发射基地强直达波干扰基础上,有效地接收目标回波信号。讨论了干扰强度与干扰波达方向对算法性能的影响。提出了改进的MUSIC波束零点形成算法。在干扰波达方向小幅偏离时,接收基地亦可获得理想的干扰抑制效果。

MUSIC Algorithm of Beam Null Forming on Linear Array of Bi-static Sonar

With the linear array assumption of R-static, a beam null forming algorithm based on multi-signal classification (MUSIC) tech was proposed. On the basis of shielding the strongly direct wave interference from T-static, the target echo signal can be received by the algorithm. The influences of intension and DOA of direct wave interference on the algorithm performance were also discussed. The improved MUSIC beam null forming algorithm was also proposed. The perfect interference suppression ability can be obtained by the improved algorithm at a tiny DOA deviation caused by the interference in the R-static.