Electronic Journal Technical Acoustics ISSN 1819-2408

A. F. Kurchanov

About estimation of power and phase spectrum of a signal

language: Russian

received 22.01.2009, published 05.02.2009

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ABSTRACT

The algorithm, which allows to estimate a power spectrum with the same narrow spectral width as when Hann time window is used, is considered. The level of the first two side lobes of the filter is less by 8 dB and practically the same for 3…10-th side lobes in comparison with Hann window. The algorithm is based on simultaneous usage of two different time windows. Joint application of two complex time windows does not lead to distortion of phase estimation.

Key words: spectral analysis, Fourier transformation, side lobe of the filter, time window

8 pages, 4 figures

Сitation: A. F. Kurchanov. About estimation of power and phase spectrum of a signal. Electronic Journal “Technical Acoustics”, http://www.ejta.org, 2009, 2.

REFERENCES

1. Бендат Дж., Пирсол А. Прикладной анализ случайных данных. - М., «Мир», 1989, 540 с.
2. Richard J. Higgins. Digital signal processing in VLSI, Analog Devices, Inc., Norwood, 1990, 575 p.
3. Курчанов А. Ф. Об оценивании спектра мощности сигнала / Измерительная техника. - 2008. - №9. - С.1035-1037.

Anatoly Kurchanov, PhD, principal research fellow at All-Russian scientific research institute for physical-technical and radiotechnical measurements (VNIIFTRI) e-mail: x-tolik(at)narod.ru