基于三元阵的舰船水压场微弱信号检测方法研究  

Research of faintness detection signal from ship hydraulic pressure field based on three unit array

作　　者：吴亮[1] 李述君 韩健 

机构地区：[1]海军驻大连地区军代表室,辽宁大连116021 [2]大连测控技术研究所,辽宁大连116013

出　　处：《舰船科学技术》2009年第5期52-55,共4页Ship Science and Technology

基　　金：国家重点实验室基金项目资助(9140C2603060605)

摘　　要：利用三元阵水压场同步测试系统一次海上实船水压场测试试验的三阵元数据开展了低信噪比实船水压场的特征提取和检测方法研究。结合三阵元,分别采用了自适应滤波方法和功率谱估计方法对所获得的试验数据进行分析处理。结果证明,基于自适应滤波和基于功率谱估计的三阵元联合浮动门限能量检测方法能有效抵消噪声干扰,所设计的浮动门限随海浪背景噪声的变化而调整,具有很好的适应性,能在低信噪比下达到较高的信号检测率。Developing the low SNR entity ship hydraulic pressure field feature extraction and detection method by using the three unit array synchronous system for a entity ship hydraulic pressure field test experiment data. Combining with the three unit array, in this paper we separately introduced the experiment data analysis and processing by method of adaptive filtering and power spectrum estimation. The result of data processing proved the detection method based on adaptive filtering and floating threshold energy detection of power spectrum estimate is good for counteracting noise, floating threshold followed the ocean wave changes in background noise, it has good adaptability and can reach a higher rate of signal detection at low SNR.

关 键 词：舰船水压场 三元阵 自适应滤波 浮动门限能量检测 

分 类 号：U666.7[交通运输工程—船舶及航道工程]