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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Electronic Suppression of Reverberation [PDF]
The Journal of the Acoustical Society of America, 1967 Several methods for electronic processing of reverberant sound signals to suppress echoes and reverberation are discussed. Potential applications of these methods in sound reinforcement, conference telephony, and underwater speech communication are described. The implications of a recently proposed self-adaptive echo canceler [M. M. Sondhi, J.
Manfred R. Schroeder
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Reverberation Suppression Method for Active Sonar Systems Using Non-Negative Matrix Factorization With Pre-Trained Frequency Basis Matrix [PDF]
IEEE Access, 2021 In active sonar systems, detection always suffers from reverberation interference from multiple scatterers in oceanic environments; therefore, numerous studies have been conducted on reverberation suppression.
Geunhwan Kim, Seokjin Lee
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Reverberation suppression using non-negative matrix factorization to detect low-Doppler target with continuous wave active sonar [PDF]
EURASIP Journal on Advances in Signal Processing, 2019 In active sonar systems, the detection of echo from targets can deteriorate due to reverberation. Detection becomes more difficult if targets have low-Doppler frequency and are located near the reverberation band, especially in an environment with low ...
Seokjin Lee, Jun-seok Lim
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Reverberation Suppression in Echocardiography Using a Causal Convolutional Neural Network [PDF]
IEEE Access, 2023 While ultrasound imaging has seen vast technical advances over the last decades, trans-thoracic echocardiography still suffers from image quality degradation caused by acoustic interaction with inhomogeneous tissue layers between the transducer and the ...
Tollef Struksnes Jahren +5 more
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Underwater Reverberation Suppression via Attention and Cepstrum Analysis-Guided Network [PDF]
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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Model-based optimal action selection for Dyna-Q reverberation suppression cognitive sonar [PDF]
EURASIP Journal on Advances in Signal Processing, 2023 The Doppler shift of low-speed targets is frequently disturbed by the reverberation Doppler spread clutter under the shallow sea. The clutter is generated by underwater scatterers, which increases the difficulty of Doppler estimation.
Yubin Fu +4 more
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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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Reverberation Clutter Suppression Using 2-D Spatial Coherence Analysis
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2022 Diffuse reverberation clutter often significantly degrades the visibility of abdominal structures. Reverberation clutter acts as a temporally stationary haze that originates from the multiple scattering within the subcutaneous layers and has a narrow spatial correlation length.
Rifat Ahmed +3 more
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Cascaded-Filter-Based Reverberation Suppression Method of Short-Pulse Continuous Wave for Active Sonar [PDF]
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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