拖船噪声抵消与左右舷分辨联合处理方法的研究

Tow ship noise canceling combined with left/right discrimination

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。

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 detection, 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 about 14dB, and left/right positions of the targets are discriminated correctly.