| 一种基于频率方差加权的线谱目标检测方法 |
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| 引用本文： | 陈阳,王自娟,朱代柱,余赟,惠俊英.一种基于频率方差加权的线谱目标检测方法[J].声学学报,2010,35(1). |
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| 作者姓名： | 陈阳 王自娟 朱代柱 余赟 惠俊英 |
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| 作者单位： | 1. 哈尔滨工程大学水声技术国防科技重点实验室,哈尔滨,150001
2. 上海交通大学船舶海洋与建筑工程学院,上海,200240;上海船舶电子设备研究所,上海,201108 |
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| 摘 要： | 在复杂的多目标声场中,常规波束形成(CBF)检测器性能显著下降。本文提出一种基于频率方差加权的线谱目标检测方法——CBF频率方差检测器,利用被动目标辐射噪声中含有高强度的稳定线谱这一特征,用每个方位频率域的峰值频率方差对CBF输出的方位谱进行加权。该检测器可在多目标强干扰和同波束强相干干扰背景中检测到弱线谱目标,且只须三维显示,避开了传统的线谱检测四维显示的难点。仿真和海试结果表明,在多目标、强干扰的环境下,可以探测到弱线谱目标。
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| 关 键 词： | 多目标干扰 辐射噪声 方差 检测系统 线谱频率 动目标 检测方法 检测器 线谱检测 强干扰 |
A detecting method for line-spectrum target based on variance-of-frequency weight |
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| CHEN Yang,WANG Zijuan,ZHU Daizhu,YU Yun,HUI Junying.A detecting method for line-spectrum target based on variance-of-frequency weight[J].Acta Acustica,2010,35(1). |
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| Authors: | CHEN Yang WANG Zijuan ZHU Daizhu YU Yun HUI Junying |
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| Institution: | CHEN Yang~1 WANG Zijuan~1 ZHU Daizhu~(2,3) YU Yun~1 HUI Junying~1 (1 National Laboratory of Underwater Acoustic Technology,Harbin Engineering University Harbin 150001) (2 School of Naval Architecture,Ocean , Civil Engineering,Shanghai Jiaotong University Shanghai 200240) (3 Shanghai Marine Electronic Equipment Research Institute Shanghai 201108) |
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| Abstract: | CBF(Conventional Beam Forming) array processing is the optimal detecting system while only one target presented in omni-directional ambient noise.However,its performances degrade in complex condition of multi-target interferes.Base on the character that the radiated noise of passive target contains high intensive and stable line spectrum, the paper puts forward CBF Variance-of-Frequency Detector,which weighs bearing spectrum using the variance of peak frequency of each azimuth.It is able to suppress multi-t... |
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