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Частотно-временной анализ нестационарных геофизических процессов на основе вейвлетов и эмпирических мод

Частотно-временной анализ нестационарных геофизических процессов на основе вейвлетов и эмпирических мод

Abstract

В работе представлены результаты частотно-временного анализа сигналов с локализованными помехами на примере сложных многокомпонентных и зашумленных процессов, регистрируемых при проведении сейсморазведочных работ. Для проведения частотно-временного анализа используются как непрерывный вейвлетный анализ, так и метод эмпирических мод. Показано, что метод разложения сигнала на эмпирические моды является перспективным инструментом исследования структуры экспериментальных данных, который расширяет возможности изучения динамики систем с меняющимися во времени характеристиками.

We have presented the results of time-frequency analysis of the non-stationary signals on the example of the complex experimental geophysical multi-component processes recorded during seismic sounding studies. We have used both continuous wavelet analyses and empirical mode methods. We have shown that empirical modes concept is the perspective tools to study the structure of non-stationary multi-component processes and broadens the possibilities of study of dynamics of the complex systems with time-dependent characteristics.

Keywords

АВТОМАТИЧЕСКАЯ ДИАГНОСТИКА, ВЕЙВЛЕТНЫЙ АНАЛИЗ, ЭМПИРИЧЕСКИЕ МОДЫ, ЦИФРОВОЙ СИГНАЛ, СЕЙСМОРАЗВЕДКА, ЗВУКОВЫЕ И ПОВЕРХНОСТНЫЕ ВОЛНЫ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
bronze