Applied Sciences, 2023 Aiming at the problems of the low detection accuracy and difficult identification of the early weak fault signals of rolling bearings, this paper proposes a method for detecting the early weak fault signals of rolling bearings based on a double-coupled ...
Shijie Shan +4 more
doaj +1 more source
Small Floating Target Detection Method Based on Chaotic Long Short-Term Memory Network
Journal of Marine Science and Engineering, 2021 In order for the detection ability of floating small targets in sea clutter to be improved, on the basis of the complete ensemble empirical mode decomposition (CEEMD) algorithm, the high-frequency parts and low-frequency parts are determined by the ...
Yan Yan, Hongyan Xing
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Periodic‐phase‐diagram similarity method for weak signal detection
International Journal of Mechanical System Dynamics, 2021 The periodic‐phase‐diagram similarity method is proposed to identify the frequency of weak harmonic signals. The key technology is to find a set of optimal coefficients for Duffing system, which leads to the periodic motion under the influence of weak ...
Ruilan Tian +5 more
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Fisher-information condition for enhanced signal detection via stochastic resonance [PDF]
, 2011 Various situations where a signal is enhanced by noise through stochastic resonance are now known. This paper contributes to determining general conditions under which improvement by noise can be a priori decided as feasible or not.
Derek Abbott +5 more
core +4 more sources
Cosmogenic neutrinos and quasi-stable supersymmetric particle production [PDF]
, 2007 We study the signal for the detection of quasi-stable supersymmetric particles produced in interactions of cosmogenic neutrinos. We consider energy loss of high energy staus due to photonuclear and weak interactions.
I. Sarcevic +5 more
core +1 more source
Detection Line Spectrum of Ship Radiated Noise Based on a New 3D Chaotic System
Sensors, 2021 This paper proposes a new detection model of a weak signal based on a third-order chaotic system. Using a dynamic analysis tool, such as the Lyapunov exponent and the bifurcation diagram, variations of dynamic behavior can be observed, and the weak ...
Gang Hu, Kejun Wang, Liangliang Liu
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Stochastic resonance with weak monochromatic driving: gains above unity induced by high-frequency signals [PDF]
, 2007 We study the effects of a high-frequency (HF) signal on the response of a noisy bistable system to a low-frequency subthreshold sinusoidal signal.
Borromeo M. +3 more
core +2 more sources
Weak magnetic anomaly signal detection based on the entropy of mixed differential signal
AIP Advances, 2021 Magnetic anomaly detection is of great significance in geological exploration and underwater target detection. However, the magnetic anomaly signal is not easy to be detected because of its weakness relative to the magnetic environmental noise, and the ...
Z. Wang, J. Qiu, D. Xie, J. Ou, Q. Xu
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Surface-wave-enabled darkfield aperture for background suppression during weak signal detection [PDF]
, 2010 Sensitive optical signal detection can often be confounded by the presence of a significant background, and, as such, predetection background suppression is substantively important for weak signal detection.
Aigouy +9 more
core +3 more sources
A new Duffing detection method for underwater weak target signal
Alexandria Engineering Journal, 2022 On the basis of the double coupled Duffing oscillator, a differential double coupled Duffing oscillator method, called the proposed method 1, is proposed.
Guohui Li, Yongming Hou, Hong Yang
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