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一种小运算量的宽带线性调频信号DOA估计算法 被引量：4

A New Method for DOA Estimation of Wide-band LFM Sources with Low Computational Load
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摘要 本文提出一种利用对称阵实现宽带线性调频(LFM)信号DOA估计的新算法。本算法通过计算对称阵元偶之间的互Wigner-Ville分布,建立时频域的阵列信号模型,并利用特征子空间方法对时频域的数据相关阵进行处理,从而获得信号DOA估计。本算法具有无需初始估计、没有扇区限制,以及计算量小等优点。计算机仿真证实了方法的有效性。 This paper presents a new method for DOA estimation of wide-band LFM sources with symmetric array geometry. The array model in time-frequency domain is formed by computing the cross Wigner-Ville distributions (XWVD) of the symmetric sensor pairs. DOA estimation is obtained through subspace analysis of the data correlation matrix in time-frequency domain. The proposed method does not need preliminary DOA estimates. It is free of sector limitation and takes the advantage of lower computational load. Numerical simulations are provided to demonstrate the effectiveness of the proposed method.
作者 田达 黄克骥 陈天麒
机构地区 电子科技大学电子工程学院
出处 《信号处理》 CSCD 2003年第1期48-50,74,共4页 Journal of Signal Processing
关键词 宽带线性调频信号 DOA估计算法 阵列信号处理 计算机仿真 线性调频信号 symmetric array wide-band LFM DOA estimation XWVD subspace
分类号 TN911.7 [电子电信—通信与信息系统]
  • 相关文献

参考文献7

  • 1A. Belouchrani and M. G. Amin,"Time-frequency MUSIC," IEEE Signal Processing Lett., vol. 6, pp. 109-110, 1999.
  • 2Yimin Zhang and W. Mu, "Subspace Analysis of Spatial Time-Frequency Distribution Matrices,".IEEE Trans.Signal Processing, vol. 49, No.4,pp.747-759, Apr. 2001.
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  • 4A. B. Cershman and M. G. Amin,"Coherent wideband DOA estimation of multiple FM signals using spatial time-frequency distributions," in Proc. ICASSP, Istanbul,Turkey, June 2000, pp. 3065-3068.
  • 5H. Wang and M. Kaveh, "Coherent signal-subspace processing for the detection and estimation of angles of arrival of multiple wide-band sources," IEEE Tra .Acoust., Speech, Signal Processing, voI.ASSP-33, pp.823-831, Aug. 1985.
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同被引文献18

  • 1兰华,李娟,刘冰,王建元,蔡国伟,石要武.基于二次型变换的Chirp信号的参数估计方法[J].电工电能新技术,2005,24(4):1-4. 被引量：1
  • 2韩卫杰,陈向东,张瑞江,索忠伟.基于改进MUSIC算法的DOA精度影响因素的研究[J].微计算机信息,2006,22(03X):273-274. 被引量：6
  • 3[1]Wang H,Kaveh M.Coherent signal-subspace processing for the detection and estimation of angles of arrival of multiple wideband sources [J].IEEE Trans.on ASSP,1985,33(8): 823-831.
  • 4[2]Hung H,Kaveh M.Focusing matrices for coherent signal-subspace processing [J].IEEE trans.on ASSP,1988,36(8): 1272-1281.
  • 5[3]Cohen L.Time-frequency analysis [M].Englewood Cliffs,NJ: Prentice-Hall,1995.
  • 6[4]Belouchrani A,Amin M.G.Blind source separation based on time-frequency signal representations[J].IEEE Trans.on Signal Processing,1998,46(11): 2888-2897.
  • 7[5]Belouchrani A,Amin M.G.Time-frequency MUSIC [J].IEEE Signal Processing Lett.,1999,6(5): 109-110.
  • 8[6]Zhang Y.M,Amin M.G.Spatial averaging of time-frequency distributions for signal recovery in uniform linear array [J].IEEE Trans.on Signal Processing,48(10): 2892-2902.
  • 9[7]Zhang Y.M,Mu W.F and Amin M.G.Subspace analysis of spatial time-frequency distribution matrices [J].IEEE Trans.Signal Processing,Apr.2001,49(4): 747-75.
  • 10[9]Gershman A.B,Amin M.G.Wideband direction of arrival estimation of multiple Chirp signals using spatial time-frequency distributions [J].IEEE Signal Processing Lett.,2000,7(6): 152-155.

引证文献4

二级引证文献10

信号处理
2003年 第1期

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