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为解决因为强辐射噪声源(判为干扰)的存在影响对弱辐射噪声源(判为目标)的检测和参数提取,甚至得不到弱辐射噪声源声图的问题,提出了一种基于矩阵空域预滤波处理的近场聚焦波束形成方法.通过设计一个空域的矩阵滤波器对水听器阵列数据进行矩阵处理,抑制指定范围内的强干扰信号,且尽量保证其他感兴趣范围内的信号无畸变通过.通过水面舰船辐射噪声声图测量的具体实例来说明该方法对系统性能的改善效果,仿真结果表明:该方法提高了对弱辐射噪声源的探测和定位能力,优化了聚焦波束扫描声图质量.
In order to solve the problem of detecting and extracting the weak radiation noise source (judged as the target) and not even the sound image of the weak radiation noise source because of the existence of the strong radiation noise source (judged as interference), a method based on the matrix Near-field focused beamforming method of airspace pre-filtering is proposed.A matrix filter of airspace is designed to process the hydrophone array data to suppress the strong interference signals in the specified range and try to ensure that the signal of other interested range The distortion is passed.An example of measuring the sound radiation of surface ship radiated noise is used to illustrate the improvement of system performance by the method.The simulation results show that this method can improve the ability of detecting and locating weak radiation noise sources and optimize the focus beam scanning Sound map quality.