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1.  Accession number:  20124815732740
Title:  The research on bispectrum detection of underwater target in frequency domain
Authors:  He, Guangjin1 ; Cheng, Jinfang1 ; Zhang, Wei1   
Author affiliation:  1 Department of Weaponry Engineering, Naval University of Engineering, 430033 Wuhan, China  
Corresponding author:  He, G. (gjhe2008@163.com)  
Source title:  Applied Mechanics and Materials
Abbreviated source title:  Appl. Mech. Mater.
Volume:  182-183
Monograph title:  Applied Mechanics and Mechatronics Automation
Issue date:  2012
Publication year:  2012
Pages:  1761-1765
Language:  English
ISSN:  16609336  
E-ISSN:  16627482  
ISBN-13:  9783037854266  
Document type:  Conference article (CA)
Conference name:  2012 International Applied Mechanics, Mechatronics Automation Symposium, IAMMAS 2012
  Conference date:  September 7, 2012 - September 9, 2012
  Conference location:  Shenyang, Liaoning, China
  Conference code:  92655  
  Publisher:  Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
  Abstract:  As the non-Gaussianity of ship-radiated noise reduces fast when the Signal-to-Noise Ratio (SNR) becomes low, a bispectrum detector in the frequency domain is proposed to ease the problem. First, FFT method is applied on the received data to calculate the power spectrum. Second, the non-Gaussianity of the power spectrum series is tested by Hinich-Wilson Gaussian Test rule. Last, the bispectrum detector based on non-Gaussianity is used to determine whether there are ship-radiated signals. The bispectrum detector in frequency domain is applied to detect simulated noise and real ship-radiated noise. The results are compared with the detector which is in the signal's time domain. The comparison illustrates that the bispectrum detector based on the power spectrum series(in frequency domain) is much better in detecting low SNR signals, which is very valuable in far distance detection. © (2012) Trans Tech Publications, Switzerland.
  Number of references:  9
  Main heading:  Detectors  
  Controlled terms:  Frequency domain analysis  -  Power spectrum  -  Signal detection  -  Signal to noise ratio  -  Target tracking  
  Uncontrolled terms:  Bispectrum  -  Distance detection  -  Frequency domains  -  Gaussianity  -  Gaussians  -  Low SNR  -  Nongaussianity  -  Ship radiated noise  -  Signaltonoise ratio (SNR)  -  Simulated noise  -  Time domain  -  Underwater target  
  Classification code:  941 Acoustical and Optical Measuring Instruments -  921.3 Mathematical Transformations -  921 Mathematics -  914 Safety Engineering -  716.2 Radar Systems and Equipment -  716.1 Information Theory and Signal Processing -  711 Electromagnetic Waves
  DOI:  10.4028/www.scientific.net/AMM.182-183.1761
  Database:  Compendex
   Compilation and indexing terms, © 2012 Elsevier Inc.
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