Analysis of diffraction spectra of periodic gratings, the profile of which is described by electrocardiograms

  • Anton S. Migel Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus
  • Sergei V. Maly Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus

Abstract

The use of a model problem on the interaction of a plane linearly polarised electromagnetic wave with the interface of two media, the profile of which is described by a periodic signal, for the formation of a feature vector (diffraction descriptor) in the form of amplitudes of propagating spatial harmonics of a scattered field is considered. The object of the study is electrocardiogram signals. Algorithms for preprocessing electrocardiogram signals to isolate normalised cardiocycles used to form periodic grating models with specified vertical and horizontal scaling coefficients with respect to wavelength are proposed. The results of calculations of diffraction descriptors for three types of electrocardiograms corresponding to different states of the cardiovascular system, obtained under different modes of scaling, fixed angle of incidence and polarisation of the electromagnetic wave, are presented. It has been established that diffraction descriptors are highly sensitive to the peculiarities of electrocardiogram signals and, with the same scaling coefficients of cardiocycles, can be used in the construction of automated diagnostic systems.

Author Biographies

Anton S. Migel, Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus

postgraduate student at the department of radiophysics and digital media technologies, faculty of radiophysics and computer technologies

Sergei V. Maly, Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus

PhD (physics and mathematics), docent; head of the laboratory of radiophysics and information technologies, department of radiophysics and digital media technologies, faculty of radiophysics and computer technologies

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Published
2025-01-20
Keywords: signal processing, periodic grating, diffraction spectrum, electrocardiogram, ECG, ECG signal descriptor
Supporting Agencies This work was carried out with the financial support of the Belarusian Republican Foundation for Fundamental Research (grant No. F23М-043).
How to Cite
Migel, A. S., & Maly, S. V. (2025). Analysis of diffraction spectra of periodic gratings, the profile of which is described by electrocardiograms. Journal of the Belarusian State University. Physics, 1, 49-56. Retrieved from https://journals.bsu.by/index.php/physics/article/view/6768
Issue
No 1 (2025): Journal of the Belarusian State University. Physics
Section
Physics of Electromagnetic Phenomena

Copyright (c) 2025 Journal of the Belarusian State University. Physics

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