Effects of noise on parameter recovery from Raman spectrograms

✍ Scribed by Jahan Mansoor Dawlaty; Darin J. Ulness

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 542 KB
• Volume: 32
• Category: Article
• ISSN: 0377-0486
• DOI: 10.1002/jrs.659

✦ Synopsis

Abstract

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.