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wanghaoming
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杈杈: 金幣+1, 謝謝提供檢索信息！ 2012-12-11 09:07:26
杈杈: 金幣+1, 謝謝提供檢索信息！ 2012-12-11 09:07:26
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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. |
2樓2012-12-11 09:01:08
3樓2012-12-11 15:40:06
wanghaoming
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4樓2012-12-11 22:52:47
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