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Numerical correction of spectrometric data using a rational filter

✍ Scribed by Leszek Szczecinski; Roman Z. Morawski; Andrzej Barwicz

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
200 KB
Volume
12
Category
Article
ISSN
0886-9383

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✦ Synopsis

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.

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