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frequency domain
(redirected from Fourier domain)

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frequency domain [′frē·kwən·sē də‚mān]
(communications)
A plane on which signal strength can be represented graphically as a function of frequency, instead of a function of time.
(control systems)
Pertaining to a method of analysis, particularly useful for fixed linear systems in which one does not deal with functions of time explicitly, but with their Laplace or Fourier transforms, which are functions of frequency.
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[alpha]](t,u)du (5) Equation (5) indicates that signal x(t) can be interpreted as decomposition to a basis formed by the orthonormal LFM functions in the u domain, and the u domain is usually called the fractional Fourier domain, in which the time and frequency domains are its special cases.
Research on DOA estimation of multi-component LFM signals based on ... by Qu, Haitao; Wang, Rihua; Qu, Wu; Zhao, Peng / Wireless Sensor Network (WSN)
For practical implementation requiring fast numerical computation the wavelet transform may be expressed in Fourier domain and the FFT algorithm employed [1].
A wavelet based technique to measure heart rate variability by Ahmad, M.K.; Knaf, H.; Lang, P. / Sampling Theory in Signal and Image Processing
In the Fourier domain image, each point represents a component with given amplitude and phase.
First steps to double star measurement using visible light ... by Williams, Sheridan; Cooper, Alan / Journal of the British Astronomical Association
 
 
 
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