Premium
Effects of noise on parameter recovery from Raman spectrograms
Author(s) -
Dawlaty Jahan Mansoor,
Ulness Darin J.
Publication year - 2001
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.659
Subject(s) - spectrogram , raman spectroscopy , noise (video) , additive white gaussian noise , acoustics , white noise , gaussian noise , maxima and minima , gaussian , optics , biological system , computer science , artificial intelligence , chemistry , physics , mathematics , telecommunications , mathematical analysis , computational chemistry , image (mathematics) , biology
Noisy light‐based Raman spectrograms are simulated to model a single Raman‐active mode with known spectroscopic parameters. Gaussian white noise is added to the spectrograms to mimic experimental data. Two‐dimensional slices of the χ 2 surface for the simulated noisy spectrograms are calculated. From the minima of a number of these surfaces, the precision of the recovered spectroscopic parameters from simulated experimental data is obtained. Three different studies dealing with various aspects of the effects of noise on the recovered parameters are presented. The advantage of noisy light‐based Raman spectrograms in yielding exquisite precision, as suggested by previous work, is verified. Furthermore, the advantage of Raman spectrograms in yielding good precision even for poor signal‐to‐noise levels is quantified. Copyright © 2001 John Wiley & Sons, Ltd.