噪声与振动控制2018，Vol.38Issue(z1)：283-287,5.DOI:10.3969/j.issn.1006-1355.2018.Z1.059
拖线阵拖船噪声的MUSIC抑制技术
Tow Ship Noise Suppression for Towed Array via Multiple Signal Classification
吴久涛 1潘辉 2任宇鸿 1陈亚伟2
作者信息
- 1. 南京电子技术研究所,南京 210039
- 2. 中国电子科技集团有限公司 智能感知技术重点实验室,南京 210039
- 折叠
摘要
Abstract
Tow ship noise is the major near-field interference for towed array sonar, and it severely limits the array’s detection ability and azimuth range due to its high noise intensity and wide extension azimuth range. To solve this problem, a multiple signal classification (MUSIC) based technique is proposed in this paper. This method can suppress the tow ship noise via migrating the eigenvector of the tow ship noise from the signal subspace to the noise subspace. Principle analysis gives the theoretical basis and feasibility of the MUSIC technique. The processing results of sea trial data show that the method can eliminate the tow ship noise dramatically within a wide azimuth range around the ship bow position. It is proved that this method has excellent tow ship noise inhibition ability, and can also effectively eliminate azimuth spread caused by the multipath effect, and hence can improve the target extraction ability and display effect.关键词
声学/水声学/拖线阵/本舰噪声/噪声抑制/多重信号分类Key words
acoustics/marine acoustics/towed array/tow ship noise/noise suppression/multiple signal classification (MUSIC)分类
通用工业技术引用本文复制引用
吴久涛,潘辉,任宇鸿,陈亚伟..拖线阵拖船噪声的MUSIC抑制技术[J].噪声与振动控制,2018,38(z1):283-287,5.
