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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
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.