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

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New wideband source number estimation method based on line detection

TANG Tao, WU Ying   

  1. 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

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.

CLC Number: 

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