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  Characterization of fine resolution field spectrometers using solar Fraunhofer lines and atmospheric absorption features

Meroni, M., Busetto, L., Guanter, L., Cogliati, S., Crosta, G. F., Migliavacca, M., et al. (2010). Characterization of fine resolution field spectrometers using solar Fraunhofer lines and atmospheric absorption features. Applied Optics, 49(15), 2858-2871. doi:10.1364/AO.49.002858.

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 Creators:
Meroni, Michele, Author
Busetto, Lorenzo, Author
Guanter, Luis, Author
Cogliati, Sergio, Author
Crosta, Giovanni Franco, Author
Migliavacca, Mirco1, Author              
Panigada, Cinzia, Author
Rossini, Micol, Author
Colombo, Roberto, Author
Affiliations:
1External Organizations, ou_persistent22              

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Free keywords: SPECTRAL CALIBRATION; IMAGING SPECTROMETERS; NETWORK; AVIRISOptics;
 Abstract: The accurate spectral characterization of high-resolution spectrometers is required for correctly computing, interpreting, and comparing radiance and reflectance spectra acquired at different times or by different instruments. In this paper, we describe an algorithm for the spectral characterization of field spectrometer data using sharp atmospheric or solar absorption features present in the measured data. The algorithm retrieves systematic shifts in channel position and actual full width at half-maximum (FWHM) of the instrument by comparing data acquired during standard field spectroscopy measurement operations with a reference irradiance spectrum modeled with the MODTRAN4 radiative transfer code. Measurements from four different field spectrometers with spectral resolutions ranging from 0.05 to 3.5 nm are processed and the results validated against laboratory calibration. An accurate retrieval of channel position and FWHM has been achieved, with an average error smaller than the instrument spectral sampling interval. (C) 2010 Optical Society of America

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Language(s): eng - English
 Dates: 2010
 Publication Status: Published in print
 Pages: 14
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: Other: BEX489
DOI: 10.1364/AO.49.002858
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Title: Applied Optics
Source Genre: Journal
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Publ. Info: Washington, DC : Optical Society of America
Pages: - Volume / Issue: 49 (15) Sequence Number: - Start / End Page: 2858 - 2871 Identifier: ISSN: 0003-6935
CoNE: https://pure.mpg.de/cone/journals/resource/991042728167604