Results 11 to 20 of about 7,633 (272)
IEEE Access, 2020 In this study, we propose a reverberation suppression algorithm for linear frequency-modulated (LFM) pulse sonar systems using a non-negative matrix factorization (NMF) method.
Geunhwan Kim, Kyunkyung Lee, Seokjin Lee
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Linear frequency modulation reverberation suppression using difference of singular values [PDF]
The Journal of the Acoustical Society of America, 2008 This letter proposes a reverberation suppression method to improve the target detection probability in reverberation environment induced by a linear frequency modulation signal. Using the singular value decomposition and an assumption of local spatial stationarity, the proposed algorithm suppresses reverberation utilizing the difference of singular ...
Hyung Soo, Lee, Kyun Kyung, Lee
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Ultrasonic Reverberation Clutter Suppression Using Multiphase Apodization With Cross Correlation [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2016 Despite numerous recent advances in medical ultrasound imaging, reverberation clutter from near-field anatomical structures, such as the abdominal wall, ribs, and tissue layers, is one of the major sources of ultrasound image quality degradation. Reverberation clutter signals are undesirable echoes, which arise as a result of multiple reflections of ...
Junseob Shin +3 more
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Remote SensingReverberation is the main background interference in active sonar and seriously interferes with the extraction of the target echo. Active sonar systems can use short-pulse continuous wave (CW) signals to reduce the reverberation intensity.
Yonglin Cui +5 more
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Journal of Marine Science and Engineering, 2022 Over the last two decades, low-frequency active sonar has become an attractive tool for underwater target detection. The reverberation to signal ratio (RSR) of transmitted waveforms is an important factor affecting the detection capability of low ...
Xiaobin Cui +5 more
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Research on reverberation characteristics analysis and suppression methods for active continuous detection [PDF]
MATEC Web of Conferences, 2019 Compared with the traditional active detection with monopulse periodic emission mode, active continuous detection has the advantages of large emission duty ratio and continuous acquisition of process information.
Chen Tuo, Ma Qiming, Zhou Zheyuan, Lu He
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A signal enhancement method based on the reverberation statistical information
EURASIP Journal on Advances in Signal Processing, 2022 This paper proposes a reverberation suppression algorithm utilizing fractional lower-order moments based on statistical properties. As fractional lower-order moments can only be applied on symmetric α-stable random variables, the energy redistribution ...
Ge Yu, Jiangjiang Sun, Xiukun Li
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Underwater Reverberation Suppression via Attention and Cepstrum Analysis-Guided Network
Journal of Marine Science and Engineering, 2023 Active sonar systems are one of the most commonly used acoustic devices for underwater equipment. They use observed signals, which mainly include target echo signals and reverberation, to detect, track, and locate underwater targets. Reverberation is the
Yukun Hao +6 more
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Remote Sensing, 2023 The detection performance of active sonar is often hindered by the presence of seabed reverberation in shallow water. Separating the reverberations from the target echo and noise in the received signal is a crucial challenge in the field of underwater ...
Jie Pang, Bo Gao
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Late reverberation suppression using U-nets
, 2021 In real-world settings, speech signals are almost always affected by reverberation produced by the working environment; these corrupted signals need to be \emph{dereverberated} prior to performing, e.g., speech recognition, speech-to-text conversion, compression, or general audio enhancement.
León, Diego, Tobar, Felipe
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