Characterization of fine resolution field spectrometers using solar Fraunhofer lines and atmospheric absorption features.
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...
| Main Authors: | , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Optical Society of American (OSA)
2010
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| _version_ | 1797054339658809344 |
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| author | Meroni, M Busetto, L Guanter, L Cogliati, S Crosta, G Migliavacca, M Panigada, C Rossini, M Colombo, R |
| author_facet | Meroni, M Busetto, L Guanter, L Cogliati, S Crosta, G Migliavacca, M Panigada, C Rossini, M Colombo, R |
| author_sort | Meroni, M |
| collection | OXFORD |
| description | 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 3.5nm 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. |
| first_indexed | 2024-03-06T18:55:52Z |
| format | Journal article |
| id | oxford-uuid:11d13ebb-7f30-4460-9689-bf746e1d2588 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:55:52Z |
| publishDate | 2010 |
| publisher | Optical Society of American (OSA) |
| record_format | dspace |
| spelling | oxford-uuid:11d13ebb-7f30-4460-9689-bf746e1d25882022-03-26T10:04:24ZCharacterization of fine resolution field spectrometers using solar Fraunhofer lines and atmospheric absorption features.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:11d13ebb-7f30-4460-9689-bf746e1d2588EnglishSymplectic Elements at OxfordOptical Society of American (OSA)2010Meroni, MBusetto, LGuanter, LCogliati, SCrosta, GMigliavacca, MPanigada, CRossini, MColombo, RThe 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 3.5nm 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. |
| spellingShingle | Meroni, M Busetto, L Guanter, L Cogliati, S Crosta, G Migliavacca, M Panigada, C Rossini, M Colombo, R Characterization of fine resolution field spectrometers using solar Fraunhofer lines and atmospheric absorption features. |
| title | Characterization of fine resolution field spectrometers using solar Fraunhofer lines and atmospheric absorption features. |
| title_full | Characterization of fine resolution field spectrometers using solar Fraunhofer lines and atmospheric absorption features. |
| title_fullStr | Characterization of fine resolution field spectrometers using solar Fraunhofer lines and atmospheric absorption features. |
| title_full_unstemmed | Characterization of fine resolution field spectrometers using solar Fraunhofer lines and atmospheric absorption features. |
| title_short | Characterization of fine resolution field spectrometers using solar Fraunhofer lines and atmospheric absorption features. |
| title_sort | characterization of fine resolution field spectrometers using solar fraunhofer lines and atmospheric absorption features |
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