Search Results - "Time-frequency analysis"

Time–Frequency Domain Signal Analysis for Knock Detection in Hydrogen-Fueled Engines.

Authors: Kinkhabwala, Brijesh Wagner, Uwe Koch, Thomas

Source: Energies (19961073). Jun2026, Vol. 19 Issue 11, p2714. 22p.

Subject Terms: *Time-frequency analysis, *Spectrum analysis, *Internal combustion engines, *Automobile engine performance, *Combustion, *Spark ignition engines

Quasi-Periodic Harmonic Feature Extraction of Power Signals via Improved Scaling-Basis Chirplet Transform.

Authors: Hu, Yihao Yu, Jiexiao

Source: Energies (19961073). May2026, Vol. 19 Issue 9, p2122. 28p.

Subject Terms: *Time-frequency analysis, *Signal reconstruction, *Automatic tracking

STFNet: A Specialized Time-Frequency Domain Feature Extraction Neural Network for Long-Term Wind Power Forecasting.

Authors: Ding, Tingxiao Hu, Xiaochun Chen, Yan et al.

Source: Energies (19961073). May2026, Vol. 19 Issue 9, p2080. 22p.

Subject Terms: *Wind forecasting, *Time-frequency analysis, *Convolutional neural networks, *Artificial neural networks, *Renewable energy source management, *Signal processing, *Machine learning, *Renewable energy sources

Financial market high-low volatility spillover and portfolio allocation: a time frequency analysis.

Authors: Qi, Agudamu Yuan, Ying Liu, Peng

Source: Applied Economics. Jul2026, p1-20. 20p. 8 Illustrations.

Geoeconomic Fragmentation and Market Decoupling: A Time–Frequency Anatomy of Oil–Ruble Volatility Spillovers (2020–2025).

Authors: Torun, Erdost Demireli, Erhan Grima, Simon

Source: Risks. May2026, Vol. 14 Issue 5, p104. 44p.

A Time-Frequency Domain Feature Fusion Model Based on Unimodal Binomial Distribution for Fault Severity Classification.

Authors: Jin, Zhenglei Xu, Qifa Jiang, Cuixia et al.

Source: Journal of Intelligent Manufacturing. May2026, Vol. 37 Issue 5, p1909-1929. 21p.

UniTF-ADA: A Unified Time-Frequency Framework with Adaptive Loss and Data Augmentations for Robust Driver Fatigue Recognition.

Authors: Liu, Yan Liu, Jie Yan, Hong et al.

Source: Engineering Letters. Jun2026, Vol. 34 Issue 6, p2401-2410. 10p.

Subjects: Time-frequency analysis, Data augmentation, Loss functions (Statistics), Electrophysiology, Statistical reliability, Wakefulness

Research on the Application of Time-Frequency Characteristics of GPR in Railway Mud Pumping Intelligent Detection.

Authors: Shi, Wenxing Wang, Shilei Yang, Feng et al.

Source: Remote Sensing. May2026, Vol. 18 Issue 9, p1393. 28p.

Subjects: Time-frequency analysis, Ground penetrating radar, Railroads, Nondestructive testing, Deep learning

Infrasonic leakage signal processing of PE pipeline based on improved AOK-TFR analysis.

Authors: Wang, Xiuwei Hao, Yongmei Wu, Fan et al.

Source: Nondestructive Testing & Evaluation. May2026, Vol. 41 Issue 5, p2576-2606. 31p.

Subjects: Signal processing, Time-frequency analysis, Genetic algorithms, Water pipelines, Signal denoising, Fourier transforms

Numerical Modeling of Environmental Vibration Induced by Millisecond Delayed Blasting of Tunnel Adjacent to Historical Building.

Authors: Sun, Lijun Huang, Chenqian Wang, Qiuzhe et al.

Source: Buildings (2075-5309); Jun2026, Vol. 16 Issue 12, p2364, 19p

A Fuzzy Comprehensive Evaluation Framework Integrating Time–Frequency Features and Combined Weighting for Matching Impact Signals with Multi-Layer Penetration Response Signals.

Authors: Shi, Huifa Jia, Kunming Li, Feiyin et al.

Source: Applied Sciences (2076-3417); Jun2026, Vol. 16 Issue 12, p5990, 35p

Research on Fault Type Identification for Distribution Networks with Distributed Power Sources Based on Improved CNN-BiGRU.

Authors: Li, Lei Wu, Weili

Source: Sensors (14248220). Jun2026, Vol. 26 Issue 12, p3947. 20p.

A Multitask Time–Frequency Deep Learning Approach for Anesthesia Depth Monitoring and Transition Prediction.

Authors: Kavuncu, Saliha Kevser Yalvac, Mehmet Basturk, Alper

Source: Diagnostics (2075-4418). Jun2026, Vol. 16 Issue 12, p1937. 25p.

基于时频对比的多源领域故障诊断方法.

Alternate Title: Multi-source Domain Fault Diagnosis Method Based on Time-frequency Comparison.

Authors: 雷斌 刘志伟 李德仓 et al.

Source: Science Technology & Engineering. 2026, Vol. 26 Issue 17, p7256-7263. 8p.

Attention-Enhanced Domain Adversarial Training for Robust Automatic Modulation Classification of Radar Signals.

Authors: Kou, Liang Wang, Guoyu Han, Hui et al.

Source: International Journal of Computers, Communications & Control; Jun2026, Vol. 21 Issue 3, p1-11, 11p

Fault diagnosis method based on EWT and improved ConvNeXt networks.

Authors: LI, Jun MA, Yi

Source: Journal of Measurement Science & Instrumentation; Jun2026, Vol. 17 Issue 2, p307-319, 13p

Spectral Entropy and STFT Analysis of Thermal Signatures for Melt Pool Stability in Laser DED Repair of Complex Structures.

Authors: Vempati, Sai Casal, Armando José Yáñez Permuy, Juan Carlos Becerra et al.

Source: Coatings (2079-6412); Jun2026, Vol. 16 Issue 6, p686, 23p

Ultra-Short-Term Power Load Forecasting Based on Multi-Scale Decomposition Clustering and Heterogeneous Gated Fusion.

Authors: Duan, Ganglong Shao, Yongcheng Gao, Xinjie et al.

Source: Applied Sciences (2076-3417); Jun2026, Vol. 16 Issue 11, p5707, 33p

ARC-Informer: Axial–Radial Coupling-Aware Informer for Wind Turbine Main Bearing Health Monitoring.

Authors: Xie, Zijing Xiao, Xiaocong Zhang, Ziyue

Source: Applied Sciences (2076-3417); Jun2026, Vol. 16 Issue 11, p5578, 25p

Wire Rope Damage Detection Method Based on CWT and IWOA-Optimized Convolutional Neural Network.

Authors: Wang, Hongyao Zhou, Yiwen

Source: Applied Sciences (2076-3417); Jun2026, Vol. 16 Issue 11, p5531, 20p