2019
DOI: 10.1109/lgrs.2018.2879889
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A Factor-Graph Clustering Approach for Detection of Underwater Acoustic Signals

Abstract: We address the challenge of detecting an arbitraryshaped underwater acoustic signal. Instead of setting a detection threshold, which due to noise transients may result in a high false alarm rate, our method classifies each measured sample as either 'noise' or 'signal'. Utilizing a-priori knowledge of only the minimal duration of the signal, the decision is made using loopy belief propagation over a factor graph. Numerical simulations and sea experimental results show that our scheme achieves a favorable trade-… Show more

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Cited by 6 publications
(1 citation statement)
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“…In the sonar system, multiple measurements can be acquired by sensor arrays. Unlike previous studies using HMM [ 14 , 22 , 23 ], here, multiple measurements were exploited not only to determine the reliable initial values using the genetic algorithm (GA) but also to update parameters using the Baum–Welch algorithm; these are described comprehensively in the following section.…”
Section: Problem Descriptionmentioning
confidence: 99%
“…In the sonar system, multiple measurements can be acquired by sensor arrays. Unlike previous studies using HMM [ 14 , 22 , 23 ], here, multiple measurements were exploited not only to determine the reliable initial values using the genetic algorithm (GA) but also to update parameters using the Baum–Welch algorithm; these are described comprehensively in the following section.…”
Section: Problem Descriptionmentioning
confidence: 99%