Indirect Fourier transformation
id:
indirect-fourier-transformation-266-8459529
title:
Indirect Fourier transformation
text:
In a Fourier transformation (FT), the Fourier transformed function f ^ is obtained from f by: where i is defined as i 2 = − 1 . f can be obtained from f ^ by inverse FT: s and t are inverse variables, e.g. frequency and time. Obtaining f ^ directly requires that f is well known from t = − ∞ to t = ∞ , vice versa. In real experimental data this is rarely the case due to noise and limited measured range, say f is known from a > − ∞ to b < ∞ . Performing a FT on f in the limited range may lead to s
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https://en.wikipedia.org/wiki/Indirect_Fourier_transformation
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2023-08-14T09:02:42Z
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{"identifier":"Q6025091","url":"https://www.wikidata.org/entity/Q6025091"}
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