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Resolution enhancement and parameter estimation in fourier analysis
Author(s) -
Balcou Y.
Publication year - 1994
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290081207
Subject(s) - fourier transform ion cyclotron resonance , chemistry , fourier transform , resolution (logic) , fourier analysis , spectral density estimation , simple (philosophy) , high resolution , discrete time fourier transform , computational physics , analytical chemistry (journal) , ion cyclotron resonance , spectral line , ion , mass spectrometry , cyclotron , short time fourier transform , mathematical analysis , physics , chromatography , mathematics , remote sensing , computer science , epistemology , philosophy , artificial intelligence , organic chemistry , astronomy , geology
Abstract Resolution in Fourier spectra can be significantly enhanced by displaying magnitudes of the complex peak derivatives with respect to frequency. These derivatives are computed by the judicious application of a new kind of windows, which reduce peak widths. When thus sharpened peaks are purely Lorentzian, then simple linear or parabolic regressions allow one to compute their parameters. A Fourier‐transform ion cyclotron resonance mass spectrometric example of such an improvement is presented.