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