期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

基于分数阶傅里叶变换的混响抑制方法研究 被引量：24

A Study on Anti-reverberation Method Based on Fractional Fourier Transform
下载PDF
导出
摘要 线性调频(LFM)信号是声呐中一种常用信号。利用LFM信号在分数阶傅里叶变换(FRFT)域的良好聚焦性,提出了一种基于FRFT的混响抑制算法,在此算法中,通过分数阶Fourier域的窄带滤波来去除混响。对实测混响数据和LFM信号的分离效果进行了仿真,分离前后信混比得到了较大提高。 Linear frequeny modulation （LFM） signals are often used in sonars. Based on the fact that LFM signal has a good focusing property in the fractional Fourier transform （FRFT） domain, a novel anti-reverberation algorithm was presented. It is based on fractional Fourier transform, in which LFM signal is separated from the reverberation through a narrow-band filter in fractional Fourier domain. Thus the effect of the reverberation is readily subtracted from the received signal. With the actual reverberation data and the LFM pulse for separation, satisfactory results were obtained.
作者 邓兵 陶然 齐林 刘锋
机构地区 北京理工大学电子工程系
出处 《兵工学报》 EI CAS CSCD 北大核心 2005年第6期761-765,共5页 Acta Armamentarii
基金 国家自然科学基金资助项目(69972003)
关键词 信息处理技术 分数阶傅里叶变换 WIGNER-VILLE分布 混响 information processing technique FRFT WVD reverberation
分类号 TN911.2 [电子电信—通信与信息系统]
  • 相关文献

参考文献17

  • 1De Roos A, Sinton J J, Cough P T, et al. The detection and classification of objects lying on the seafloor [J ]. J Acoust Soc Am,1988, 84(4) : 1456 - 1477.
  • 2Piper J E, Commander K W, Thorsos E I, et al. Detection of buried targets using a synthetic aperture sonar [Jl. IEEE Journal of Oceanic Engineering, 2002, 27(3) : 495 - 504.
  • 3Kaczkowski P J, Siderius M, Luby J C, et al. Broadband mine detection and classification-preliminary results from a set of low-frequency shallow water experiments [J]. J Acoust Soc Am, 1996,100(2) : 2853 - 2854.
  • 4Roitblat H L, Au W W L, Nachtlgall P E, et al. Sonar Recognition of Targets Embedded in Sediment [J ]. Neural Networks,1995, 8(7-8):1263-1273.
  • 5Abeysekera S S, Naidu P S, Leung Y H, et al. An under-water target classification scheme based on the acoustic backscatter form function [A]. IEEE Signal Process Soc IEEE ICASSP Proceedings[C]. New York, NY, USA; IEEE, 1998; 2513-2516.
  • 6Carmillet V, Jourdain G. Low-speed targets sonar detection using autoregressive models in reverberation; Experimental performances for wideband signals [A]. IEEE Oceanic Engineering Society Proceedings of the 1998 Oceans Conference [ C ]. NewYork, NY, USA: IEEE, 1998: 1285-1289.
  • 7Ginolhac G, Jourdain G. Detection in presence of reverberation[A]. IEEE; MTS. Proceedings of Oceans 2000 [C]. Piscataway, NJ, USA: IEEE, 2000: 1043-1046.
  • 8Collins T, Atkins P. Doppler-sensitive active sonar pulse designs for reverberation processing[J]. Radar, Sonar and Navigation,IEEE Proceedings, 1998, 145(6) : 347 - 353.
  • 9Kirsteins I P, Fay J, Kelly J. Suppressing reverberation by multipath separation for improved buried object detection [A]. Marine Technology Society; IEEE; OES. Proceedings of Oceans 2001[C], Washington, DC, USA: Marine Technol Soe, 2001:236- 244.
  • 10蔡志明,郑兆宁,杨士莪.水中混响的混沌属性分析[J].声学学报,2002,27(6):497-501. 被引量：17

二级参考文献9

  • 1蒋志平，Opt Lett，1995年
  • 2吕百达，激光光学.激光束的传输变换和光束质量控制（第2版），1992年
  • 3蒋志平
  • 4Qi Lin,Tao Ran,Zhou SIyong ,et al .Adptive Time-varying Filter for Linear FM Signal in Fractional Domain [A].IEEE6th Interna-tional Conference on signla processing [C],2001,2:1425-1428.
  • 5Namias V.The Fractional Fourier Transform and Its Application in Quan-tum Mechanics[J].J.Inst.Math.Appl.1980,25(4):241-265.
  • 6Almeida L B.The Fractional Fourier Transform and Time-Frequency Representations[J].IEEE Trans. On Signaal Processing,1994,42(11):3084-3091.
  • 7Haykin S,Xiao B L.Detection of signal in chaos[].PIEEE.1995
  • 8Kanze H,Schreiber T.Nonlinear time series analysis[]..1997
  • 9Abarbanel HDI.Analysis of observed chaotic data in physical system[].Reviews of Modern Physics.1993

共引文献38

同被引文献176

引证文献24

二级引证文献60

兵工学报
2005年 第6期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部