基于自适应波束形成的水下运动源辐射噪声测量方法
Underwater Radiated Noise Measurement Method of Moving Source Based on Adaptive Beamforming
陈宜斌 1侯朋 1梁喆 1朱艺佳 1杨松1
作者信息
- 1. 大连测控技术研究所 大连 116016
- 折叠
摘要
提出了一种约束测量精度的同时提供最大抑制干扰的自适应波束形成方法.采用水听器阵列接收测量信号,约束由声场格林函数得到的阵列合成信号与单个阵元接收信号的误差,根据获取最大阵列增益的准则设计阵列的最佳权系数,并利用二阶锥优化求解权系数,从而得到约束测量精度下的最大化干扰抑制自适应波束形成器.计算机仿真结果表明,该方法在低信噪比条件下保证较高的噪声测量精度的同时,可以有效提高水下运动声源辐射噪声的处理增益.
Abstract
An adaptive beamforming method is proposed,which can restrain the measurement accuracy and provide maximum interference suppression.The hydrophone array is used to receive the measurement signal,and the error between the array synthe-sized signal obtained by Green's function of sound field and the signal received by a single array element is restricted.The optimal weight coefficient of the array is designed according to the criterion of obtaining the maximum array gain,and the weight coefficient is solved by using the second-order cone optimization,so as to obtain the adaptive beamformer for maximizing interference suppres-sion under the constraint of measurement accuracy.The computer simulation results show that this method can effectively improve the processing gain of radiated noise from underwater moving sound sources while ensuring high noise measurement accuracy under low signal-to-noise ratio conditions.
关键词
自适应波束形成/格林函数/阵列增益/运动源/噪声测量Key words
adaptive beamforming/Green function/array gain/motion source/noise measurement引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据