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JOURNALS // Vestnik KRAUNC. Fiziko-Matematicheskie Nauki // Archive

Vestnik KRAUNC. Fiz.-Mat. Nauki, 2022 Volume 41, Number 4, Pages 120–136 (Mi vkam574)

This article is cited in 1 paper

INFORMATION AND COMPUTATION TECHNOLOGIES

Modern methods of processing and analysis of geophysical pulse signals

O. O. Lukovenkova, M. A. Mishenko, Yu.I. Senkevich, A. O. Shcherbina

Institute of Cosmophysical Research and Radio Wave Propagation FEB RAS

Abstract: The studies of various physical fields are conducted at Institute of cosmophysical research and radio wave propagation. The signals recorded during such studies often have pulse nature, i. e., they are sequences of pulses. The paper observes modern methods of digital signal processing which can be used for the analysis of geophysical pulse signals. To search for signal fragments which contain anomalies, the digital filtering within seven frequency bands and further averaging over 1-second intervals are proposed. To isolate single pulses under conditions of permanent background noise, the adaptive threshold scheme is used. To remove noise and to separate the informal part of the signals, wavelet thresholding is applied. To analyse the time- frequency content of pulses, the authors offer sparse approximation method. To study peculiarities of pulse shape, the transformation of a pulse into the binary matrix which uniquely determines the pulse form.

Keywords: pulse signals, signal processing, signal analysis.

UDC: 004.04

MSC: 94A12

DOI: 10.26117/2079-6641-2022-41-4-120-136



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