The reduction in signal detection threshold with the method of waveform cross correlation by using a seismic array of three-component sensors

2016 ◽  
Keyword(s):  
Signal Detection ◽  
Cross Correlation ◽  
Detection Threshold ◽  
Seismic Array ◽  
Waveform Cross Correlation

scholarly journals Field Theoretical Approach for Signal Detection in Nearly Continuous Positive Spectra II: Tensorial Data

Entropy ◽  
2021 ◽  
Vol 23 (7) ◽  
pp. 795
Author(s):  
Vincent Lahoche ◽  
Mohamed Ouerfelli ◽  
Dine Ousmane Samary ◽  
Mohamed Tamaazousti
Keyword(s):  
Principal Component Analysis ◽  
Renormalization Group ◽  
Signal Detection ◽  
Detection Threshold ◽  
Principal Component ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Component Analysis ◽  
Slight Generalization ◽  
Nearly Continuous

The tensorial principal component analysis is a generalization of ordinary principal component analysis focusing on data which are suitably described by tensors rather than matrices. This paper aims at giving the nonperturbative renormalization group formalism, based on a slight generalization of the covariance matrix, to investigate signal detection for the difficult issue of nearly continuous spectra. Renormalization group allows constructing an effective description keeping only relevant features in the low “energy” (i.e., large eigenvalues) limit and thus providing universal descriptions allowing to associate the presence of the signal with objectives and computable quantities. Among them, in this paper, we focus on the vacuum expectation value. We exhibit experimental evidence in favor of a connection between symmetry breaking and the existence of an intrinsic detection threshold, in agreement with our conclusions for matrices, providing a new step in the direction of a universal statement.

Detection of ultraweak signals on the Mikhnevo small-aperture seismic array by using cross-correlation of waveforms

2015 ◽  
Vol 460 (2) ◽  
pp. 189-191 ◽  
Author(s):  
V. V. Adushkin ◽  
I. O. Kitov ◽  
N. L. Konstantinovskaya ◽  
K. S. Nepeina ◽  
M. A. Nesterkina ◽  
...  
Keyword(s):  
Cross Correlation ◽  
Seismic Array ◽  
Small Aperture

Use of Waveform Cross Correlation to Reconstruct the Aftershock Sequence of the August 14, 2016, Sakhalin Earthquake

2019 ◽  
Vol 55 (5) ◽  
pp. 544-558
Author(s):  
I. O. Kitov ◽  
S. B. Turuntaev ◽  
A. V. Konovalov ◽  
A. A. Stepnov ◽  
V. V. Pupatenko
Keyword(s):  
Cross Correlation ◽  
Aftershock Sequence ◽  
Waveform Cross Correlation
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