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СПЕКТРАЛЬНОЕ ПРЕОБРАЗОВАНИЕ СИГНАЛОВ С НЕРАВНОМЕРНОЙ ДИСКРЕТИЗАЦИЕЙ

СПЕКТРАЛЬНОЕ ПРЕОБРАЗОВАНИЕ СИГНАЛОВ С НЕРАВНОМЕРНОЙ ДИСКРЕТИЗАЦИЕЙ

Abstract

The article provides the rationale for the relevance of spectral transformation of signals with uneven discretization. The method of making a polynomial on samples of signal values with uneven discretization on a finite time interval is presented. The output of expression of the spectral density for the approximating polynomial is made. It forms the basis for the expression of spectrum for a registered array of signals samples with uneven discretization. The proposed method for the discrete Fourier transformation allows producing a digital spectral analysis of signals, in contrast to the classical FFT, with uneven time sampling of their values, thus ensuring high accuracy.

Приведено обоснование актуальности спектрального преобразования сигналов с неравномерной дискретизацией. Представлена методика составления полинома по выборкам значений сигнала с неравномерной дискретизацией на конечном интервале времени. Для аппроксимирующего полинома приведен вывод выражения спектральной плотности и на ее основе составлена формула линейчатого спектра для зарегистрированного массива выборок сигнала с неравномерной дискретизацией.

Keywords

ИНТЕРПОЛЯЦИЯ,НЕРАВНОМЕРНАЯ ДИСКРЕТИЗАЦИЯ,ПРЕОБРАЗОВАНИЕ ФУРЬЕ,СПЕКТРАЛЬНОЕ ПРЕОБРАЗОВАНИЕ,FOURIER TRANSFORMATION,INTERPOLATION,SPECTRAL TRANSFORMATION,UNEVEN DISCRETIZATION

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Powered by OpenAIRE graph
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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