Výsledky vyhledávání - "Frequency analysis"

Sparse Time-frequency Analysis of Seismic Data: Sparse Representation to Unrolled Optimization Autor Liu, Naihao, Lei, Youbo, Liu, Rongchang, Yang, Yang, Wei, Tao, Gao, Jinghuai

“…Time-frequency analysis (TFA) is widely used to describe local time-frequency (TF) features of seismic data. Among the commonly used TFA tools, sparse TFA…”
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Novel Short-Time Fractional Fourier Transform: Theory, Implementation, and Applications Autor Shi, Jun, Zheng, Jiabin, Liu, Xiaoping, Xiang, Wei, Zhang, Qinyu

“…As a generalization of the classical Fourier transform (FT), the fractional Fourier transform (FRFT) has proven to be a powerful tool for signal processing and…”
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Seismic Sparse Time-frequency Network with Transfer Learning Autor Liu, Naihao, Zhang, Yuxin, Lei, Youbo, Yang, Yang, Wang, Zhiguo, Gao, Jinghuai, Jiang, Xiudi

“…Time-frequency analysis (TFA) is a powerful tool for describing time-frequency (TF) features of seismic data, such as short-time Fourier transform and…”
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Using Physically Based Synthetic Peak Flows to Assess Local and Regional Flood Frequency Analysis Methods Autor Perez, Gabriel, Mantilla, Ricardo, Krajewski, Witold F., Wright, Daniel B.

“…Although prior studies have evaluated the role of sampling errors associated with local and regional methods to estimate peak flow quantiles, the investigation…”
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A Combined Polynomial Chirplet Transform and Synchroextracting Technique for Analyzing Nonstationary Signals of Rotating Machinery Autor Yu, Kun, Lin, Tian Ran, Ma, Hui, Li, Hongfei, Zeng, Jin

“…Time-frequency analysis (TFA) technique is an effective approach to capture the changing dynamic in a nonstationary signal. However, the commonly adopted TFA…”
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Epileptic Seizure Classification of EEGs Using Time–Frequency Analysis Based Multiscale Radial Basis Functions Autor Li, Yang, Wang, Xu-Dong, Luo, Mei-Lin, Li, Ke, Yang, Xiao-Feng, Guo, Qi

“…The automatic detection of epileptic seizures from electroencephalography (EEG) signals is crucial for the localization and classification of epileptic seizure…”
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Multisynchrosqueezing Transform Autor Yu, Gang, Wang, Zhonghua, Zhao, Ping

“…Time-frequency (TF) analysis (TFA) method is an important tool in industrial engineering fields. However, restricted to Heisenberg uncertainty principle or…”
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High-Order Synchroextracting Time-Frequency Analysis and Its Application in Seismic Hydrocarbon Reservoir Identification Autor Chen, Xuping, Chen, Hui, Fang, Yuxia, Hu, Ying

“…Time-frequency (TF) analysis (TFA) plays an important role in seismic hydrocarbon reservoir identification, which is attributed to its ability to effectively…”
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HDEC-TFA: An Unsupervised Learning Approach for Discovering Physical Scattering Properties of Single-Polarized SAR Image Autor Huang, Zhongling, Datcu, Mihai, Pan, Zongxu, Qiu, Xiaolan, Lei, Bin

“…Understanding the physical properties and scattering mechanisms contributes to synthetic aperture radar (SAR) image interpretation. For single-polarized SAR…”
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Identification of time‐varying cable tension forces based on adaptive sparse time‐frequency analysis of cable vibrations Autor Bao, Yuequan, Shi, Zuoqiang, Beck, James L., Li, Hui, Hou, Thomas Y.

“…Summary For cable bridges, the cable tension force plays a crucial role in their construction, assessment and long‐term structural health monitoring. Cable…”
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TFA-Net: A Deep Learning-Based Time-Frequency Analysis Tool Autor Pan, Pingping, Zhang, Yunjian, Deng, Zhenmiao, Fan, Shaocan, Huang, Xiaohong

“…Recently, synchrosqueenzing transform (SST)-based time-frequency analysis (TFA) methods have been developed for achieving the highly concentrated TF…”
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Generalized Horizontal Synchrosqueezing Transform: Algorithm and Applications Autor Tu, Xiaotong, Zhang, Qi, He, Zhoujie, Hu, Yue, Abbas, Saqlain, Li, Fucai

“…Time−frequency analysis (TFA) is regarded as an efficient technique to reveal the hidden characteristics of the oscillatory signal. At present, the traditional…”
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Wideband Beam Tracking in THz Massive MIMO Systems Autor Tan, Jingbo, Dai, Linglong

“…Terahertz (THz) massive multiple-input multiple-output (MIMO) has been considered as one of the promising technologies for future 6G wireless communications…”
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Serrodyne Frequency Translation Using Time-Modulated Metasurfaces Autor Wu, Zhanni, Grbic, Anthony

“…Temporally modulated metamaterials have attracted significant attention recently due to their nonreciprocal and frequency converting properties. Here, a…”
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Centroid-Oriented Extracting Transform and Its Application in Seismic Spectral Decomposition Autor Chen, Xuping, Chen, Hui, Hu, Ying, Wang, Siyuan, Song, Yuanwei

“…Time-frequency (TF) analysis (TFA) is a vital spectral decomposition tool for reservoir characterization due to its superiority in analyzing nonstationary…”
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Series AC Arc Fault Detection Method Based on Hybrid Time and Frequency Analysis and Fully Connected Neural Network Autor Wang, Yangkun, Zhang, Feng, Zhang, Xueheng, Zhang, Shiwen

“…The variety of arc fault induced by different load types makes residential series arc fault detection complicated and challengeable. This paper proposes a…”
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Flight trajectory prediction enabled by time-frequency wavelet transform Autor Zhang, Zheng, Guo, Dongyue, Zhou, Shizhong, Zhang, Jianwei, Lin, Yi

“…Accurate flight trajectory prediction is a crucial and challenging task in air traffic control, especially for maneuver operations. Modern data-driven methods…”
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Generalized Transient-Extracting Transform and Its Accurate Signal Reconstruction Autor Bao, Wenjie, Hu, Yue, Li, Fucai

“…Traditional time-frequency analysis (TFA) methods can effectively obtain instantaneous frequency (IF) features of nonstationary signals by constructing the…”
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Deconvolutive Improved S Transform and Its Application in Hydrocarbon Detection Autor Wu, Xuefeng, Zhang, Huixing, He, Bingshou

“…Seismic signals are usually non-linear and non-stationary. The Fourier transform based on stationary signal processing theory cannot depict the frequency…”
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Scaling-Basis Chirplet Transform Autor Li, Miaofen, Wang, Tianyang, Chu, Fulei, Han, Qinkai, Qin, Zhaoye, Zuo, Ming J

“…In this study, a novel time-frequency (TF) analysis method, referred to as the scaling-basis chirplet transform (SBCT), is developed by extending the…”
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