NDLI: A statistical method for underwater target detection

Content Provider	IEEE Xplore Digital Library
Author	Keman Liu Jinglin Xiang
Copyright Year	2008
Description	Author affiliation: Coll. of Marine Eng., Northwestern Polytech. Univ., Xian (Keman Liu; Jinglin Xiang)
Abstract	This paper presents a statistical method to detect target underwater based on the statistical properties of the number of zero crossings and the amplitude of noise over a unit time interval. A new decision statistic is defined as the ratio of the mean value of the number of zero crossings to the energy of each segment when the lines appear near the lower frequency limit. Approximate expressions of the P $_{d}$ and P $_{fa}$ are derived. Experimental results taken from the sea show that the proposed method can achieve 4~7 dB suppression of the noise in comparison with the energy detection method, and can achieve 5~8 dB enhancement of the target signal in comparison with zero-crossing detection method.
Starting Page	5878
Ending Page	5882
File Size	141400
Page Count	5
File Format	PDF
ISBN	9781424421138
DOI	10.1109/WCICA.2008.4592830
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-06-25
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Noise Detectors Marine vehicles Broadband communication Joints Band pass filters Gaussian distribution ambient noise zero crossing detection broadband energy detection Gaussian distributions
Content Type	Text
Resource Type	Article

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