基于直线检测的宽带信源个数估计新方法

Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (8): 1878-1881.

基于直线检测的宽带信源个数估计新方法

唐涛, 吴瑛

信息工程大学信息工程学院, 河南, 郑州, 450002

收稿日期:2008-03-24 修回日期:2008-12-17 出版日期:2009-08-20 发布日期:2010-01-03
作者简介:唐涛(1981- ),男,博士研究生,主要研究方向为数字信号处理、阵列信号处理及其DSP实现.E-mail:tangtao869@yahoo.com.cn

New wideband source number estimation method based on line detection

TANG Tao, WU Ying

Coll. of Information Engineering, Information Engineering Univ., Zhengzhou 450002, China

Received:2008-03-24 Revised:2008-12-17 Online:2009-08-20 Published:2010-01-03

摘要/Abstract

摘要： 为了快速有效地估计复杂条件下的宽带信源个数,提出了一种基于直线检测的宽带信源个数估计新方法.该方法通过对宽带信号的阵列采样输出分段并进行FFT变换,得到多个频率点上的窄带采样协方差矩阵,再利用盖氏圆技术和校正技术得到修正的盖氏半径.最后通过直线检测的方法快速有效地分离信号圆盘和噪声圆盘,从而估计出宽带信源个数.在低信噪比、色噪声环境下通过计算机仿真表明了该算法的正确性和有效性.

Abstract: To estimate the wideband source number in the complicated environment quickly and effectively,a new method based on line detection is proposed.The array sample output is first divided in the temporal domain into nonoverlapping narrowband components by using FFT.Then,the Gerschgorin radii are computed by the Gerschgorin and emendation technology.Lastly,the signal and noise Gerschgorin disks are separated by the line detection to estimate the wideband source number.The simulation results in low SNR and colored noise demonstrate the correctness and effectiveness of the proposed method.

中图分类号:

TN957

唐涛, 吴瑛. 基于直线检测的宽带信源个数估计新方法[J]. Journal of Systems Engineering and Electronics, 2009, 31(8): 1878-1881.

TANG Tao, WU Ying. New wideband source number estimation method based on line detection[J]. Journal of Systems Engineering and Electronics, 2009, 31(8): 1878-1881.

参考文献

[1] Wax M,Kailath T.Detection of signals by information theoretic criteria[J].IEEE Trans.on ASSP,1984,33(2):387-392.
[2] Wax M,Ziskind I.Detection of the number of coherent signals by the MDL principel[JJ.IEEE Trans.on ASSP,1989,37(8):1190-1196.
[3] Chen W,Wong K M,Reilly J P.Detection of the number of signals:a predicted eigen-threshold approach[J].IEEE Trans,on Signal Processing,1991,39(5):1088-1991.
[4] Wu H T,Yang J F,Chen F K.Source number estimation using transformed Gerschgorin radii[J].IEEE Trans.on Signal Processing,1995,43(6):1325-1333.
[5] Zoubir A M,Boashash B.The bootstrap and its application in signal processing[J].IEEE Signal Processing Magazine,1998,15(1):56-57.
[6] Chen W,Reilly J P.Detection of the number of signals in noise with banded covariance matrices[J].IEEE Trans.on Signal Processing,1992,45(2):377-380.
[7] Pascale C,Joel G,Pascal L,et al.Estimation of the number of signals from features of the covariance matrix[J].IEEE Trans.on Signal Processing,1999,47(11):3108-3115.
[8] Yamamoto K,Asano F,Van Rooijen.Estimation of the number of sound sources using support vector machines and its application to sound source separation[J].Proc.of ICASSP,2003:485-488.
[9] 张彦飞,关键,王捷,等.一种新的基于霍夫变换的信号源个数估计方法[J].探测与控制学报,2006,28(2):26-29.
[10] 陶青长,黄桂根,高梅国.基于GS正交投影快速估计信源个数的方法[J].数据采集与处理,2006,21(13):22-25.
[11] 包志强,韩冰,吴顺君.基于模糊聚类的信源个数检测新算法[J].电子与信息学报,2006,28(10):1761-1765.
[12] 张杰,廖桂生,王珏.空间相关噪声下基于酉变换的信号源数目估计[J].电子学报,2005,33(9):1581-1585.
[13] 石宇,高宪军,王树勋.基于矩形面阵的信源参数和信源个数估计新方法[J].电子测量与仪器学报,2008,22(1):38-42.
[14] 马倩,廖桂生,李军.一种针对色噪声相干源的源数目估计方法[J].雷达科学与技术,2008,6(1):56-60.
[15] 郑春弟,冯大政,周炜.利用信号非圆特征的信源个数检测算法[J].西安电子科技大学学报,2006,33(3):466-470.