Title :
Square-wave Fourier transform
Author :
Bates, R.H.T. ; Napier, P.J. ; Chang, Y.P.
Author_Institution :
University of Canterbury, Department of Electrical Engineering, Christchurch, New Zealand
Abstract :
Unless inconveniently high sampling rates are used, the fast-Fourier-transform (f.f.t.) algorithm, being a trapezoidal integration rule, gives errors in the tails of spectra. A transform with a square-wave kernel, which can be evaluated accurately in a simple manner, is proposed to complement the f.f.t. An example involving measured data is included.
Keywords :
fast Fourier transforms;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19700513
