Results 1 to 10 of about 776,960 (177)

Robust Reverberation Suppression Method Based on Alternating Projections [PDF]

Sensors
By leveraging the high correlation between multi-ping echo data, low-rank and sparse decomposition methods are applied for reverberation suppression.
Xiongwei Xiao, Feng Xu, Juan Yang
doaj   +7 more sources

A Reverberation Suppression Method Based on the Joint Design of a PTFM Waveform and Receiver Filter [PDF]

Entropy, 2022
Transmitting waveform design and signal processing method optimization are effective ways to improve a sonar system’s detection performance. In this study, the spectrum and ambiguity function characteristics of pulse trains of frequency modulation (PTFM)
Lei Yue, Hong Liang, Tong Duan, Zezhou Dai   +3 more
doaj   +5 more sources

A construction method of reverberation suppression filter using an end-to-end network. [PDF]

PLoS ONE, 2023
Reverberation is the primary background interference of active sonar systems in shallow water environments, affecting target position detection accuracy.
Zhen Wang, Hao Zhang, Xiao Chen, Yuan An
doaj   +3 more sources

A Wasserstein generative adversarial network with gradient penalty for active sonar signal reverberation suppression

Frontiers in Marine Science, 2023
Reverberation is the primary background interference of active sonar systems in shallow water environments, affecting target position detection accuracy.
Zhen Wang, Hao Zhang, Hao Zhang, Wei Huang, Xiao Chen, Ning Tang, Yuan An   +6 more
doaj   +4 more sources

Reverberation Suppression Method for Active Sonar Systems Using Non-Negative Matrix Factorization With Pre-Trained Frequency Basis Matrix

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
doaj   +4 more sources

Reverberation Suppression in Echocardiography Using a Causal Convolutional Neural Network

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, Anders Rasmus Sornes, Bastien Denarie, Erik Steen, Tore Bjastad, Anne H. Schistad Solberg   +5 more
doaj   +3 more sources

Linear Frequency Modulated Reverberation Suppression Using Non-Negative Matrix Factorization Methods, Dechirping Transformation and Modulo Operation

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
doaj   +4 more sources

Cascaded-Filter-Based Reverberation Suppression Method of Short-Pulse Continuous Wave for Active Sonar

Remote Sensing
Reverberation 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, Shuhan Liao, Juncheng Gao, Haidong Zhu, Nengtong Zhao, An Luo   +5 more
doaj   +4 more sources

Waveform Design Using Coprime Frequency-Modulated Pulse Trains for Reverberation Suppression of Active Sonar

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, Cheng Chi, Shuqiu Li, Zigao Li, Yu Li, Haining Huang   +5 more
doaj   +2 more sources

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, Xiaojun Wu, Huiyuan Wang, Xinyi He, Chengpeng Hao, Zirui Wang, Qiao Hu   +6 more
doaj   +2 more sources