Título:
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Advances in calibration of the SMOS zero-baseline radiometers
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Autor/a:
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Colliander, Andreas; Chae, Chunsik; Dinnat, Emmanuel Philippe; Oliva, Roger; Kainulainen, Juha; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Martín Neira, Manuel
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Otros autores:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció; Universitat Politècnica de Catalunya. RF&MW - Grup de Recerca de sistemes, dispositius i materials de RF i microones |
Abstract:
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Over the course of the more than four-year mission several enhancements have been developed for the calibration of the zero-baseline radiometers of ESA's SMOS (Soil Moisture Ocean Salinity) mission. Here a particular advancement in adjusting the antenna loss parameters is highlighted. Two methods that enable estimation of the antenna loss are utilized to update the calibration parameters. The impact of the new parameters is evaluated with respect to synthesized antenna temperature which is based on the simulator developed for the Aquarius instrument. The results indicate that the new parameters yield measurements which are significantly closer to the simulated values over the life-time of the mission. This suggests that the new parameters indeed improve the performance of the zero-baseline measurement of SMOS which improves the overall accuracy and stability of the SMOS brightness temperature products. |
Abstract:
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Peer Reviewed |
Materia(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció -Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Oceanografia -Remote sensing -Soil moisture -Aquarius -Inter-calibration -SMOS -Teledetecció -Sòls -- Humitat |
Derechos:
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Tipo de documento:
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Artículo - Versión publicada Objeto de conferencia |
Editor:
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Institute of Electrical and Electronics Engineers (IEEE)
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