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Discrete-time Fourier transform

About: Discrete-time Fourier transform is a research topic. Over the lifetime, 5072 publications have been published within this topic receiving 144643 citations. The topic is also known as: DTFT.


Papers
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Journal ArticleDOI
TL;DR: In this article, an uncertainty principle for the representation of a vector in two bases has been shown to be applicable to the discrete version of the short time Fourier transform (SFTF).

34 citations

Journal ArticleDOI
TL;DR: In this article, the Fourier transform of the Vlasov equation analytically in velocity space was studied and the resulting equation was solved numerically by using outgoing wave boundary conditions.

34 citations

Journal ArticleDOI
TL;DR: A joint power spectrum based processor called joint transform correlator, which is shift invariant and can produce at the output well-defined peaks identifying the presence and the location of the targets.

33 citations

Journal ArticleDOI
TL;DR: In this paper, a non-recursive transform equation for the Fourier transform of a discrete Walsh function with a rectangular pulse was developed, which is a function of the bits of the Gray code number for the order of the Walsh function.
Abstract: Convolution of a discrete Walsh function with a rectangular pulse simplifies the derivation of an expression for the Fourier transform of a Walsh function. The nonrecursive transform equation that is developed is a function of the bits of the Gray code number for the order of the Walsh function.

33 citations

Journal ArticleDOI
TL;DR: In this paper, the first N Fourier-Bessel transform is computed in the order of 2 LN log 2 N operations and this number is comparable to the operation count corresponding to a two-dimensional discrete Fourier transform.

33 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202321
202249
20216
202015
201917
201834