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Повышение эффективности подавления высокочастотных помех в электрокардиосигналах

Повышение эффективности подавления высокочастотных помех в электрокардиосигналах

Abstract

Рассмотрены вопросы подавления помех в электрокардиосигналах (ЭКС) на основе эмпирической модовой декомпозиции (ЕМD). Обосновано применение адаптивного базиса для анализа ЭКС. Описан алгоритм эмпирической модовой декомпозиции. Предложен усеченный алгоритм ЕМD. Рассмотрены задачи нелинейной пороговой обработки эмпирических мод ЭКС. Ключевой параметр нелинейной пороговой обработки определение значения порога дискриминации, от него зависит эффективность подавления помех в ЭКС. Рассмотрены известные робастные оценки масштаба. Выбрана Q-оценка для вычисления параметра уровня шума в отдельных эмпирических модах. Разработан алгоритм определения порога дискриминации при подавлении высокочастотных помех в ЭКС на основе усеченной ЕМD.

In this article questions of ECG signals denoising based on empirical modes decomposition are considered. The application of adaptive basis for the analysis of ECG. The algorithm of empirical mode decomposition algorithm are considered. The truncated algorithm of empirical modes decomposition algorithm proposed. The tasks of nonlinear thresholding empirical modes shown. The key parameter in the thresholding process is the choice of the threshold value. The known robust scale estimators are considered. Q -estimator is selected for the calculation of noise parameter in some empirical modes. An algorithm for determining the threshold value in suppressing high-frequency interference in ECG signals based on truncated EMD.

Keywords

ЭЛЕКТРОКАРДИОСИГНАЛЫ, ПОДАВЛЕНИЕ ПОМЕХ, РАЗЛОЖЕНИЕ НА ЭМПИРИЧЕСКИЕ МОДЫ, НЕЛИНЕЙНАЯ ПОРОГОВАЯ ОБРАБОТКА, РОБАСТНАЯ ОЦЕНКА МАСШТАБА

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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
gold