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Split-spectrum processing: analysis of polarity threshold algorithm for improvement of signal-to-noise ratio and detectability in ultrasonic signals
Journal article

Split-spectrum processing: analysis of polarity threshold algorithm for improvement of signal-to-noise ratio and detectability in ultrasonic signals

P.M Shankar, P Karpur, V.L Newhouse and J.L Rose
IEEE transactions on ultrasonics, ferroelectrics, and frequency control, v 36(1)
Jan 1989
PMID: 18284955

Abstract

Algorithm design and analysis Band pass filters Filtration Frequency diversity Interference Mechanical engineering Performance analysis Signal analysis Signal detection Signal processing
A polarity thresholding algorithm that has recently been developed for split-spectrum processing for ultrasonic coherent noise reduction is theoretically analyzed to evaluate its performance. The probability density function (PDF) of the output of the algorithm is derived and used to calculate the theoretical signal-to-noise ratio (SNR) enhancement and the receiver operating characteristics. The performance limits of the algorithm are also established. Some experimental results of SNR enhancement obtained with the polarity thresholding algorithm are presented.< >

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Web of Science research areas
Acoustics
Engineering, Electrical & Electronic
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