舰船辐射噪声检测的被动合成孔径算法  

Algorithm of Passive Synthetic Aperture Sonar Based on Detecting of Ship Radiated Noise

作　　者：赵闪[1,2] 陈新华[1] 余华兵[1] 孙长瑜[1] 

机构地区：[1]中国科学院声学研究所,北京100190 [2]中国科学院研究生院,北京100190

出　　处：《火力与指挥控制》2013年第2期48-51,共4页Fire Control & Command Control

基　　金：海洋公益性行业科研专项经费项目(20100500106)

摘　　要：舰船辐射噪声在低频段具有稳定的线谱成分,其特征信息丰富,利用该线谱成分可以实现对水下目标的检测。被动合成孔径(Passive Synthetic Aperture Sonar,PSAS)算法对小孔径基阵沿直线运动接收到的信号进行合成处理,从而达到虚拟大孔径基阵的方位分辨力效果,进而提高对弱目标信号的检测能力。理论分析结合仿真不同因素对被动合成孔径算法影响,验证了算法的有效性和可行性。The ship radiated noise is provided with a stable part of the line-spectrum, which owns rich information, and it will effectively detect underwater target by the line-spectrum signal. The algorithm of Passive Synthetic Aperture Sonar is for synthetic processing the receiving signal of small aperture array along the linear motion, in order to achieve the orientation resolution effects of the virtual large aperture array, and it could further increase the weaking signal detective ability. Through theoretical analysis and actual simulation based on effects of different elements, the validity and feasibility of the algorithm are proved.

关 键 词：辐射噪声 被动合成孔径 方位分辨力 

分 类 号：TB565[交通运输工程—水声工程]