Results 11 to 20 of about 2,309,558 (245)
A New Hybrid Model for Underwater Acoustic Signal Prediction
Complexity, 2020 The prediction of underwater acoustic signal is the basis of underwater acoustic signal processing, which can be applied to underwater target signal noise reduction, detection, and feature extraction. Therefore, it is of great significance to improve the
Guohui Li, Wanni Chang, Hong Yang
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Acoustic emission signal analysis [PDF]
, 1982 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.An extension of acoustic emission technology was made which permits identification of probable source mechanisms for signals emitted during the failure of ...
Carlyle, John Michael
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A Non-Contact Vital Signs Detection in a Multi-Channel 77GHz LFMCW Radar System
IEEE Access, 2021 The technology of vital signs detection has been proven of great use, whereas it is still limited by several challenges. One of the major challenges is the random body movements (RBMs), which significantly degrade the accuracy of the measurement. In this
Qisong Wu +4 more
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Journal of Marine Science and Engineering, 2022 Near-field interference suppression for a towed linear array (TLA) is investigated in this paper. The existing eigencomponent association (ECA) scheme and multiple signal classification interference suppression (MUSIC-IS) scheme require the prior ...
Kun Wei, Shiliang Fang, Jun Tao
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Numerical simulation of acoustic signal propagation in underwater acoustic duct
, 2021 Object and purpose of research. The progress in numerical simulation methods significantly widens the capabilities of theoretical analysis in the tasks requiring extensive calculations and input data sets, like sound propagation at sea.
Fyodor F. Legusha, Yury N. Popov
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Hybrid SVM-CNN Classification Technique for Human–Vehicle Targets in an Automotive LFMCW Radar
Sensors, 2020 Human–vehicle classification is an essential component to avoiding accidents in autonomous driving. The classification technique based on the automotive radar sensor has been paid more attention by related researchers, owing to its robustness to low ...
Qisong Wu +3 more
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Improved Velocity Estimation Method for Doppler Sonar Based on Accuracy Evaluation and Selection
Journal of Marine Science and Engineering, 2021 The matched filtering method and the waveform-tracking method cannot maintain optimal velocity estimation performance all of the time. In order to solve this problem, this paper proposes an improved velocity estimation method for Doppler sonar, based on ...
Yongshou Yang, Shiliang Fang
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Variable Scale Relative Entropy Detection for Non-Cooperative Underwater Acoustic Pulse Signals
IEEE Access, 2020 This work investigates the detection of non-cooperative underwater acoustic pulse signals at low signal-to-noise ratio (SNR). A variable scale relative entropy (VSRE) pulse signal detection scheme is proposed. Different from conventional relative entropy
Kun Wei, Shiliang Fang, Jun Tao
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Dynamic Optimization Method for Broadband ADCP Waveform with Environment Constraints
Sensors, 2021 Broadband acoustic Doppler current profiler (ADCP) is widely used in agricultural water resource explorations, such as river discharge monitoring and flood warning.
Yongshou Yang, Shiliang Fang
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IEEE Access, 2017 The wideband underwater acoustic multipath channel can be modeled as a multi-scale multi-lag (MSML) channel because signals from different paths might experience different Doppler scales. This brings great challenge to channel parameter estimation.
Xing Zhang +3 more
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