拖船噪声抵消与左右舷分辨联合处理方法的研究

利用拖曳双线阵声纳基阵结构的左右舷分辨能力,并结合拖船相对于拖曳线列阵的空间位置关系,本文提出一种拖船噪声抵消与左右舷分辨联合处理的方法,在波束域分别形成左右波束并将映像波束相减,在检测目标并进行左右分辨的同时,可以显著抵消拖船噪声。海试结果验证了该方法的有效性,拖船噪声被抑制掉约14dB,同时正确分辨出目标的左右舷方位。

Tow ship noise canceling combined with left/right discrimination

Based on the left/right discrimination ability of towed twin-line array and the orientation of tow ship relative to the array,a method for tow ship noise canceling combined with left/right discrimination is proposed,which forms left and right beams respectively, and performs subtraction for each pair of image beams.This method achieves target detec- tion,left/right discrimination and tow ship noise canceling at the same time.The results of some sea trial data processing are promising,where the tow ship noise is cancelled by a- bout 14dB,and left/right positions of the targets are discriminated correctly.