Statistics Modeling of Shallow Sea Ambient Noise and Its Applications in Low-frequency Line Spectrum Detection |
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Authors: | YANG Xiu-ting ZHAO Xiao-zhe LI Gang |
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Affiliation: | YANG Xiu-ting1,ZHAO Xiao-zhe1,LI Gang2(1.Postdoctoral Station of Tactics,Navel Academy of PLA,Dalian 116018,Liaoning,China,2.Unit No.91278,Dalian 116023,China) |
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Abstract: | The noise's statistical characteristics are very important for signal detection.In this paper,the ambient noise statistical characteristics are investigated by using the recorded noise data in sea trials first,and the results show that the generalized Gaussian distribution is a suitable model for the ambient noise modeling.Thereafter,the optimal detector based on maximum likelihood ratio can be deduced,and the asymptotic detector is also derived under weak signal assumption.The detector's performance is ver... |
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Keywords: | information processing technique generalized Gaussian distribution line spectrum detection ambient noise |
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