全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
电子学报  2013 

基于多途模型匹配的浅海噪声源聚焦定位方法

DOI: 10.3969/j.issn.0372-2112.2013.03.026, PP. 575-581

Keywords: 多途,浅海,最差性能优化,稳健性

Full-Text   Cite this paper   Add to My Lib

Abstract:

本文在建立符合水声相干多途信道特点的阵列信号模型的基础上,提出了基于多途模型匹配的浅海噪声源聚焦定位方法.该方法在本质上利用了基于模型和数据匹配的相干处理思想,充分利用了多途信道信息,生成与实际声传播特性相匹配的空间聚焦导向矢量,从而有效克服了多途效应的影响,提高了定位精度.进而结合基于最差性能优化的稳健聚焦处理器设计方法,对空间聚焦导向矢量实施约束,并划归为具有单一非线性约束的二次最小化问题,求解最优权矢量,修正得到新的空间谱形式.通过对空间谱、定位误差、-3dB波束宽度及主峰与最大旁瓣比性能进行对比分析,讨论了约束参数选取与失配误差程度之间的关系,并证明了新算法在存在失配误差的情况下,可有效提高MVDR(MinimumVarianceDistortionlessResponse)高分辨算法的稳健性,保持较尖锐的谱峰及较强的背景起伏抑制能力.

References

[1]  J V Candy,E J Sullivan.Model-based environmental inversion:a shallow water ocean application[J].Journal of the Acoustical Society of America,1995,98(3):1446-1454.
[2]  J V Candy,E J Sullivan.Passive localization in ocean acoustics:a model-based approach[J].Journal of the Acoustical Society of America,1995,98(3):1455-1471.
[3]  J V Candy,E J Sullivan.Model-based processor design for a shallow water ocean acoustic experiment[J].Journal of the Acoustical Society of America,1994,95(4):2038-2051.
[4]  J V Candy,E J Sullivan.Model-based processing of a large aperture array[J].IEEE Transactions on Oceanic Engineering,1994,19(4):519-528.
[5]  惠俊英,余,惠娟,滕超.多途信道中声屏蔽及声聚焦[J].哈尔滨工程大学学报,2009,30(3):299-306. Hui J Y,Yu Y,Hui J,Teng C.Acoustic shielding and acoustic focusing[J].Journal of Harbin Engineering University,2009,30(3):299-306.(in Chinese)
[6]  惠娟,胡丹,惠俊英,殷敬伟.聚焦波束形成声图测量原理研究[J].声学学报,2007,32(4):356-361. HUI Juan,HU Dan,HUI Jun-ying,YIN Jing-wei.Researches on the measurement of distribution image of radiated noise using focused beamforming[J].Acta Acustica,2007,32(4):356-361.(in Chinese)
[7]  刘聪锋,廖桂生.基于模约束的稳健Capon波束形成算法[J].电子学报,2008,36(3):440-445. LIU Cong-feng,LIAO Gui-sheng.Robust capon beamformer under norm constraint.Acta Electronica Sinica,2008,36(3):440-445.(in Chinese)
[8]  Vorobyov S A,Gershman A B,Luo Z Q.Robust adaptive beamforming using worst-case performance optimization:a solution to the signal mismatch problem[J].IEEE Transactions on Signal Processing,2003,51(2):313-324.
[9]  鄢社锋,马远良.二阶锥规划方法对于时空域滤波器的优化设计与验证[J].中国科学E辑,信息科学,2006,36(2):153-171.
[10]  J V Candy,E J Sullivan.Model-based identification:an adaptive approach to ocean acoustic processing[J].IEEE Transactions on Oceanic Engineering,1996,21(3):273-289.
[11]  时洁,杨德森,刘伯胜.基于虚拟时间反转镜的噪声源近场定位方法研究[J].兵工学报,2008,29(10):1215-1219. SHI Jie,YANG De-sen,LIU Bo-sheng.Radiated noise sources near-field location based on virtual time reversal mirror[J].Acta Armamentarii,2008,29(10):1215-1219.(in Chinese)
[12]  时洁,杨德森,时胜国.基于最差性能优化的运动声源稳健聚焦定位识别方法研究[J].物理学报,2011,60(6):064301,1-11. Shi Jie,Yang De-Sen,Shi Sheng-Guo.Robust localization and identification method of moving sound sources based on worst-case performance optimization[J].Acta Phys Sin,2011,60(6):064301,1-11.(in Chinese)
[13]  刘聪锋,廖桂生.基于二次约束的稳健LCMP波束形成算法[J].电子学报,2010,38(9):1990-1996. LIU Cong-feng,LIAO Gui-sheng.Robust LCMP beamformer under quadratic constraint[J].Acta Electronica Sinica,2010,38(9):1990-1996.(in Chinese)
[14]  刘聪锋,廖桂生.最差性能最优的稳健波束形成算法[J].西安电子科技大学学报(自然科学版),2010,37(1):1-7. LIU Cong-feng,LIAO Gui-sheng.Robust beamforming algorithm using worse-case performance optimization[J].Journal of Xidian Universit,2010,37(1):1-7.(in Chinese)
[15]  Jian Li,Petre Stoica,Zhi song Wang.On robust capon beamforming and diagonal loading[J].IEEE Transactions on Signal Processing,2003,51(7):1702-1715.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133