Numerical correction of spectrometric data using a rational filter

Leszek Szczecinski , Roman Z. Morawski , Andrzej Barwicz


Raw spectrometric data are subject to systematic errors of an instrumental type that may be reduced provided a mathematical model of the spectrometer used, or its pseudoinverse, i.e. an operator of reconstruction, is identified. The idea to identify this operator directly during calibration of the spectrometer is developed in this paper. The applicability of an operator of reconstruction having the form of a rational filter is studied when it is used for correction of the instrumental errors introduced by an absorption spectrometer. An algorithm for identification of this operator is proposed and studied using spectrometric-type synthetic data and real-world spectrometric data. The proposed operator is compared with some existing algorithms of spectrometric data correction, using accuracy-related criteria, both non-specific and specific to spectrometry. Copyright © 1998 John Wiley \& Sons, Ltd.
Author Leszek Szczecinski
Leszek Szczecinski,,
, Roman Z. Morawski RE
Roman Z. Morawski,,
- The Institute of Radioelectronics
, Andrzej Barwicz
Andrzej Barwicz,,
Journal seriesJournal of Chemometrics, ISSN 0886-9383
Issue year1998
Keywords in EnglishDigital signal processing, rational filter, spectrometry
Languageen angielski
Score (nominal)30
Publication indicators WoS Impact Factor: 2006 = 1.342 (2) - 2007=2.5 (5)
Citation count*18 (2018-02-18)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.