The Causes of Leakage Deviations from Sinc Function in DFT and Ways to Minimize Them

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG43__%2F20%3A00556650" target="_blank" >RIV/60162694:G43__/20:00556650 - isvavai.cz</a>

Výsledek na webu

<a href="http://aimt.unob.cz/vol15is2.htm" target="_blank" >http://aimt.unob.cz/vol15is2.htm</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3849/aimt.01375" target="_blank" >10.3849/aimt.01375</a>

Jazyk výsledku

čeština

Název v původním jazyce

The Causes of Leakage Deviations from Sinc Function in DFT and Ways to Minimize Them

Popis výsledku v původním jazyce

The article describes a new model for the solution of the instability problem of discrete Fourier transform (DFT) spectra leakage for the incoherent real sinusoidal signal for solving the most accurate estimation of its frequency. This paper shows this phenomenon by a new form of DFT spectrum expression. It consists mainly of the spectrum of the rectangular signal in the form of the sinc function, modulated to the frequency of the tested signal in baseband. To do this, analogous spectra from other neighboring bands formed by the sampling effect are added as aliasing. The analysis shows some ways to minimize or correct it. The paper shows a simpler and substantially lesser effect of aliasing in the DFT spectrum for a complex valued sinusoidal signal

Název v anglickém jazyce

The Causes of Leakage Deviations from Sinc Function in DFT and Ways to Minimize Them

Popis výsledku anglicky

The article describes a new model for the solution of the instability problem of discrete Fourier transform (DFT) spectra leakage for the incoherent real sinusoidal signal for solving the most accurate estimation of its frequency. This paper shows this phenomenon by a new form of DFT spectrum expression. It consists mainly of the spectrum of the rectangular signal in the form of the sinc function, modulated to the frequency of the tested signal in baseband. To do this, analogous spectra from other neighboring bands formed by the sampling effect are added as aliasing. The analysis shows some ways to minimize or correct it. The paper shows a simpler and substantially lesser effect of aliasing in the DFT spectrum for a complex valued sinusoidal signal

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Advances in Military Technology

ISSN

1802-2308

e-ISSN

2533-4123

Svazek periodika

15

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

12

Strana od-do

317-328

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85097421740