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Journal of Sensors
Volume 2011, Article ID 608157, 9 pages
http://dx.doi.org/10.1155/2011/608157
Research Article

Dark Signal Temperature Dependence Correction Method for Miniature Spectrometer Modules

Group of Remote Sensing of Vegetation, Department of Atmospheric Physics, Tartu Observatory, 61602 Tõravere, Estonia

Received 27 September 2010; Revised 17 January 2011; Accepted 9 February 2011

Academic Editor: Amine Bermak

Copyright © 2011 Joel Kuusk. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A dark signal temperature dependence correction method for miniature spectrometer modules is described in this paper. It is based on laboratory measurements of dark signal temperature dependence at few different integration times. A set of parameters are calculated which make it possible to estimate dark signal at any temperature and integration time within reasonable range. In field conditions, it is not always possible to take frequent dark signal readings during spectral measurements. If temperature is recorded during the measurement, this method can be used for estimating dark signal for every single spectral measurement. The method is validated on two different miniature spectrometers.