scholarly journals High resolution coherent spectral analysis method based on Brillouin scattering in optical fiber

2021 ◽  
Author(s):  
Jiwen Cui ◽  
Suwen Zhang ◽  
Hong Dang ◽  
Yuqi Tian ◽  
Zaibin Xu ◽  
...  
Keyword(s):  
Spectral Analysis ◽  
High Resolution ◽  
Optical Fiber ◽  
Brillouin Scattering ◽  
Analysis Method ◽  
Spectral Analysis Method

Monte Carlo CLEAN Spectral Analysis Method for Detecting the Stratigraphic Cycles Based on High-resolution Electrical Image Log Data

2017 ◽  
Vol 22 (4) ◽  
pp. 325-337
Author(s):  
Fu-qiang Lai ◽  
Zhao-Hui Huang ◽  
Zhang-xiong Zhu ◽  
Shao-hua Xu ◽  
Wei-xu Xia ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Spectral Analysis ◽  
High Resolution ◽  
Milankovitch Cycles ◽  
Analysis Method ◽  
Vienna Basin ◽  
Log Data ◽  
Significance Level ◽  
Spectral Analysis Method ◽  
High Resolution Sequence Stratigraphy

This paper performs a Monte Carlo CLEAN (MC-CLEAN) spectral analysis with high-resolution electrical image log data and interpret the high-resolution formation sequence by investigating the cycles in the sediments. Firstly, in order to perform a spectral analysis with high-resolution electrical image log data, the background conductivity log curve was extracted from the borehole image. Secondly, the MC-CLEAN spectrum analysis method was used to isolate all the peaks of the logging signal. Then the 95% significance level of the CLEAN spectrum was calculated to identify the true period of the formation by Monte Carlo simulation. Finally, the MC-CLEAN spectral analysis method was applied in the two shale intervals from Lower Pannonian interval of Vienna basin to identify the stratigraphic cycles. The analysis results showed that the identified cycles in the sedimentary record good matched the Milankovitch cycles. This paper provided a new approach of identifying stratigraphic cycles and interpreting high-resolution sequence stratigraphy.

An Adaptive Graph Spectral Analysis Method for Feature Extraction of an EEG Signal

2019 ◽  
Vol 19 (5) ◽  
pp. 1884-1896 ◽  
Author(s):  
Shanzhi Xu ◽  
Hai Hu ◽  
Linhong Ji ◽  
Peng Wang
Keyword(s):  
Feature Extraction ◽  
Spectral Analysis ◽  
Eeg Signal ◽  
Analysis Method ◽  
Spectral Analysis Method

scholarly journals Residual Network Structure-based High Accuracy Spectral Analysis Method

2019 ◽  
Vol 15 (11) ◽  
pp. 3090
Author(s):  
Wu Sai ◽  
Wang Zhihui ◽  
Meng Sachura ◽  
Zheng Weijun ◽  
Shao Weiping
Keyword(s):  
Spectral Analysis ◽  
Network Structure ◽  
High Accuracy ◽  
Analysis Method ◽  
Residual Network ◽  
Spectral Analysis Method
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