摘要
提出聚焦波束形成技术,研究了近场条件下目标噪声源的分布图(声图)的测量方法。为了克服多途干涉对声图质量的影响,分别采用了虚拟时间反转镜和虚阵声图测量技术。研究结果表明,这两种方法均能很好地抑制多途,用水平直线阵能够测量出目标噪声源在水平面内的声图,有较高的分辨力。
A method using focused beamforming to measure the distribution image （underwater image） of ship＇s noise sources is presented in this paper. Level linear array can measure the target image on water level, but the multi-path interference of underwater acoustic channel may affect the quality of it. Virtual time reversal mirror and virtual array can both solve the problem very well, they make the image has high resolution.
出处
《声学学报》
EI
CSCD
北大核心
2007年第4期356-361,共6页
Acta Acustica
基金
哈尔滨工程大学基金(heuft07018)
