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第 39 卷 第 4 期                                                                       Vol. 39, No. 4
             2020 年 7 月                          Journal of Applied Acoustics                      July, 2020

             ⋄ 研究报告 ⋄



                        近场聚焦逆波束形成的UUV平台噪声

                                                 自适应抵消                 ∗



                                  宁江波      1,2,3  李淑秋     1,2  李 宇     1,2†  叶青华      1,2



                                              (1 中国科学院声学研究所       北京   100190)
                                        (2 中国科学院先进水下信息技术重点实验室           北京   100190)
                                                (3 中国科学院大学      北京  100049)
                摘要：水下航行器平台自噪声会对舷侧阵产生干扰，从而影响其探测性能，该文针对平台尾部自噪声源的直达
                噪声和海面反射噪声，提出了基于近场聚焦逆波束形成的平台噪声自适应抵消方法。文中利用水下航行器平
                台设计参数、深度以及运动姿态信息对尾部自噪声传播到舷侧阵的路径建立几何模型，并分析了影响该路径
                的因素；通过该模型，平台尾部自噪声能够实时自适应地通过聚焦波束形成被估计出来，从而在舷侧阵的接收
                信号中实现干扰抵消。仿真结果与海试实验数据处理结果表明，该方法能够有效抑制尾部自噪声干扰，显著提
                高水下航行器探测弱目标的能力。
                关键词：水下航行器自噪声；噪声抵消；聚焦逆波束形成；弱目标探测
                中图法分类号: U674.941; TN911.7          文献标识码: A         文章编号: 1000-310X(2020)04-0527-09
                DOI: 10.11684/j.issn.1000-310X.2020.04.005


                    Adaptive cancellation of UUV self-noise based on the inverse focusing

                                             beamforming in near field

                                 NING Jiangbo 1,2,3  LI Shuqiu 1,2  LI Yu 1,2  YE Qinghua 1,2
                               (1 Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China)
                (2 Key Laboratory of Science and Technology on Advanced Underwater Acoustic Signal Processing, Chinese Academy of
                                                 Sciences, Beijing 100190, China)
                                   (3 University of Chinese Academy of Sciences, Beijing 100049, China)

                 Abstract: Underwater unmanned vehicle (UUV) self-noise interferes with the side array seriously, and makes
                 against detection. Aiming at the direct noise and the reflected noise by sea level of the stern noise source, an
                 adaptive noise cancellation method based on focusing inverse beamforming is proposed. This paper built a
                 geometric model for the path of noise propagation from the tail to the side array, combining the information of
                 design parameters of the structure, depth of navigation and motion attitude of the UUV, and the factors that
                 influence the path are analyzed. According to this model, the tail noise can be estimated by focusing inverse
                 beamforming, and it could be removed from the received signal of side array in real-time and adaptively. The
                 results of simulation and the data processing in the sea trial experiment show that our method can cancel the
                 self-noise effectively and improve the ability of detection for the weak targets significantly.
                 Keywords: UUV self-noise; Noise cancellation; Focusing inverse beamforming; Weak target detection


             2019-10-22 收稿; 2020-03-31 定稿
             国防基础科研计划重大项目 (JCKY2016206A003), 国家自然科学基金项目 (11904386)
             ∗
             作者简介: 宁江波 (1994– ), 男, 湖南郴州人, 硕士研究生, 研究方向: 信号与信息处理。
             † 通信作者 E-mail: ly@mail.ioa.ac.cn
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