| 基于MVDR的宽带水下被动声自导系统远程目标检测方法 |
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| 引用本文： | 游鸿,黄建国. 基于MVDR的宽带水下被动声自导系统远程目标检测方法[J]. 兵工学报, 2009, 30(2): 160-164 |
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| 作者姓名： | 游鸿 黄建国 |
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| 作者单位： | 西北工业大学航海学院，陕西西安710072 |
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| 摘 要： | 远程目标检测是水下航行器被动声自导系统的重要技术问题。本文采用基于子带分解的宽带最小方差无畸变响应( MVDR)波束形成进行空间能量检测，通过在频域各子带进行自相关矩阵平滑有效改善检测稳定性。相比传统窄带及未进行自相关矩阵平滑的宽带波束形成方法，所提方法能显著提高系统低信噪比检测性能。仿真和湖试实验结果表明该方法有较好的工程应用前景。
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| 关 键 词： | 信息处理技术 弱信号检测 阵列信号处理 宽带信号 最小方差无畸变响应 |
Detection of Long-distance Object Based on MVDR for Wideband Underwater Passive Acoustic Home Guide System |
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| YOU Hong,HUANG Jian-guo. Detection of Long-distance Object Based on MVDR for Wideband Underwater Passive Acoustic Home Guide System[J]. Acta Armamentarii, 2009, 30(2): 160-164 |
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| Authors: | YOU Hong HUANG Jian-guo |
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| Affiliation: | College of Marine, Northwestern PolytechnicalUniversity, Xi'an 710072, Shaanxi,China |
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| Abstract: | The detection of long distance object is a important technical area for passive home guide system in underwater vehicle.The detection method of long-distance object was proposed by minimum variance distortionless response(MVDR) beam forming,based on sub-band decomposition,to detect spatial energy distribution accurately.On the basis of the method,the detecting stability was improved by auto-correlation matrix smoothing in every sub-band.It uses auto-correlation matrix smoothing in every sub-band to improve ... |
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| Keywords: | information processing weak signal detection array signal processing wideband signal minimum variance distortionless response |
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