Fourier transform


Also found in: Thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia.

Fourier transform

n.
An operation that maps a function to its corresponding Fourier series or to an analogous continuous frequency distribution.

[After Baron Jean Baptiste Joseph Fourier.]

Fourier transform

n
(Mathematics) an integral transform, used in many branches of science, of the form F(x) = [1/√(2π)]∫eixyf(y)dy, where the limits of integration are from –∞ to +∞ and the function F is the transform of the function f
References in periodicals archive ?
The correlation methos is based on Fourier transform (eqn.
First, introduce the Green's tensor and take its Fourier transform in time and space; then, expand the transformed Green's tensor according to the eigenvector of the Christoffel matrix, and decompose the fields into downgoing waves and upgoing waves; third, use boundary conditions to interatively get the solution in the transform domain in a form of "generalized ray" series; finally, use the Willis inversion technique to get the solution.
Fourier transform (FT) Roman spectroscopy can directly measure phenyl groups in pulp lignin, serving as an alternative to the standard permanganate consumption measurement technique and may help to determine residual-lignin concentration in pulps.
To use the gauge as a troubleshooting tool, the data are fed into a spectral analyzer via an RS232 port for an on-line Fast Fourier Transform (FFT) analysis.
In recent years, Fourier transform methods have emerged as one of the major methodologies for the evaluation of derivative contracts, largely due to the need to strike a balance between the extension of existing pricing models beyond the traditional Black-Scholes setting and a need to evaluate prices consistently with the market quotes.
Contract notice: Supply and installation of mass spectrometry platform fourier transform (ft ms) for the project equipex marss.
Some exciting areas of development in structural analysis applications--for example, study of intact proteins using high-resolution fast Fourier transform mass spectrometry--are not addressed.
The Fourier transform consists of two delta functions.
The instruments combine two analytical techniques, optical emission and Fourier transform infrared spectroscopy, to identify various metals and organic compounds in oil.
Subject of procurement is the supply, installation and commissioning of an FTIR spectrometer (Fourier-transform infrared spectrometer and Fourier transform infrared spectrometer), consisting of those referred to in the terms of reference equipment, software and other services that and for teaching Researcher in art, is to be used in the field of microsystems technology and optical technologies.
Full browser ?